Really great food and customer service. The atmosphere of the place is very welcoming and there's a lot of seating with nice tables and chairs. They have this deal going on where a single party smash burger is $3.99 and a double is $5.99. I've been there quite a bit and it always hits whenever I'm in the area. Give them a try if you ever find yourself wanting a perfect smash burger in the Old Town Pasadena area. read more

I really like the All In burger! The burger comes with fresh lettuce, tomatoes, avocados, pickles, and the sauce for the burger has fresh onions. The mushroom and beef patty are really good and flavorful. My partner and I came around the time they opened; there's ample of seating inside. Service was quick, we got our burger in ~5 minutes. I didn't get a chance to take a picture of the burger since my partner inhaled it too quickly. Overall, would definitely come back here again! read more

Tried this burger spot in Pasadena after seeing it on Instagram and decided to check it out. We ordered a burger and some chili cheese fries, and overall the food was really good. The burger was solid and the chili cheese fries definitely hit the spot. Customer service was on point--staff was friendly and attentive, which always makes a difference. The inside was pretty minimal in terms of aesthetics, nothing too special, but it was clean and comfortable. Overall, a good experience and I'll definitely be back. read more

This place looks good. So let's see if they're pretty good eh or ew. I got their onion rings, farm fries, and all in burger to try. The onion rings were perfectly crispity crunchity, frangrant, oniony, and came with some thousand island dipping sauce. The farm fries were some nicely crunchy, seasoned, curly fries topped with gooey cheese, crisp bacon bits, grilled onions, and tangy thousand island. Pure deliciously. The all in burger had more thousand island, lettuce, underripe avocado, a chewy bouncy mushroom patty, savory bacon and cheese, a well seasoned good quality burger patty all on a pillowy airy brioche. Hard for a burger spot to usually hit the spot for me but this one did and is pretty good. Onion rings $5.25 Farm fries $6 All in burger $15.75 read more

Mr Mushroom Burger Farm - Instagram/YouTube/TikTok/Yelp/Google Maps: @AC9MOO - Burgers Near Me - Pasadena, California

My dog and I were heading home from shopping around in Old Town and we walked past this spot. I was getting quite hungry and to be honest, a burger did sound good. Glancing at the menu outside their window I was looking at their burger options. I'm really big on BBQ and onion rings so Poppy Q was right up my alley. Then I saw that there was a combo option, SOLD! Decided to walk in and ordered the Poppy Q Combo. I was right away welcomed by Jason & Victor! They were amazing! Thanks guys! The burger was both visually appealing and incredibly satisfying. Served on a poppy seed bun with a prime cut beef patty, crispy onion rings, barbecue sauce, cheddar cheese, and bacon, every bite was rich, savory, and mouthwatering. The fries were also good! I will say, fries are a hit or miss. But these had that ideal crispy texture that makes each bite satisfying. The spot is spacious, so a good amount of indoor seating. Unfortunately, parking may be a problem around Old Town. That's a given. So good luck with the street meter parking, private lot parking, parking structure parking, etc. Would definitely recommend! read more

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5 star burger spot in Pasadena. The burgers are really good. Always made to order. I would go as far to say that this place has the best fries in Pasadena. The onion rings are good. They have their own special sauce. One of the cleanest restaurants in Pasadena. The service is great. Everyone is friendly and makes ordering and eating their very pleasant. Parking: you gotta find a lot. Not lot or parking spaces. Overall: Will 1000% return for their burger combo. read more

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3/04/2026: Stopped in for a light, late lunch. The hubster saw a video on TikTok and I'm so glad he did! The Double Class Act combo comes with a delicious, well charred burger made from locally sourced prime beef with American cheese, beefsteak tomato, juicy pickles, fresh lettuce and onion on a brioche bun. The bread to beef ratio is perfection! They have half-shroom or fully vegan patty options as well. I don't usually care for a thicker cut fry.. but their long, coated fries are addictive. A generous portion to share.. but you might not want to! The service is super friendly. Kevin is behind the counter and will take you through the menu and bring your order to the table. He also has a great music mix playing! Oingo Boingo and so much more from the 80's and 90's! I was going to give 4.5 stars.. they get the extra half for the tunes of my youth! The place is immaculate and very comfortable. There's a free public parking structure conveniently located at the end of the block. Do yourself a favor and come give Mr. Mushroom Burger a try! You will not be sorry! read more

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I ate here three times today, and ordered take out twice once for some friends and a second time for my wife. These burgers are very tasty, very fresh and at 5.99 for a Class Act Double what more could you want? The long coat fries are amazing, got an order of onion rings to go for the wife they look good but the order has only 6 rings so take that how you will. Do not park in the lot nearby it's 12 dollars flat cost more than a meal here. Pasadena parking be scamming. read more

Mr Mushroom Burger Farm - Class Act double - Burgers Near Me - Pasadena, California

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I know I said i was done with smash burgers, but when I looked at their menu, the burgers didn't really look "smashy". I'm so glad I tried them. This was an amazing fu*king burger. I'm talking up there with Amboy and Hen & Heifer. Even their fries were different. Super thick but crispy. I got the chili cheese fries upgrade and they were fire! If I had 1 knock, it would be the lack of fountain drinks. I need an ice cold drink with my high caloric meals. read more

Mr Mushroom Burger Farm - Double Poppy Q - Burgers Near Me - Pasadena, California

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Came to the restautant and not open? Thursday 4/9 at 5:43pm. No sign at the door either. Not sure if they are still open

Great burgers, whether or not you're vegetarian. The name is a bit misleading because their normal burgers are really good too.

I've been back and forth between a vegetarian and pescetarian since the late 1900s, so when my boyfriend asked if I wanted to go try a mushroom burger, I had immediate visions of the sad half cooked, weirdly grill marked, whole portobello mushroom cap "burgers" that I spent a large portion of my tween years pretending to enjoy. Happily, the mushroom patties here have almost nothing in common with those mushroom monstrosities of the past, besides the shared fungi base. I really enjoyed the taste and texture of the mushroom patty. The texture is similar to an impossible or beyond burger patty, but without the heavy grease feeling that those can leave you with. I'll take a house recipe vegetarian patty 4 out of 5 times, so having a tasty nearby option for that when my boyfriend is craving a burger is exciting. I also have to call out the fries here. I'm a fry fiend. These are SO good. They're coated with a slight seasoning for that extra flavor and crunch, cut thick enough to alllllllmost be steak fries, and they're so very fluffy inside. I was shocked at how in to these fries I was, and my boyfriend agrees that they're delicious. He ordered a classic burger, which is smash burger style, and cleaned his plate, so their regular burger also gets a thumbs up. Lastly, the staff was very friendly, and easily explained when I had a question about a sauce. I'm happy, and I see some more mushroom burgers (and fries!!!) in my future. read more

Mr Mushroom Burger Farm - Champignon burger and fries - Burgers Near Me - Pasadena, California

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Where do I start? With the smell of a warm urinal cake wafting in the air as you enter the place? How confused the people serving the food look when you ask them if they have a side of chili? Is it the bland decor? Nah. It's how horrible the food is. The burgers are show with thick juicy patties. What do I get? An over cooked thin layer of shoe leather that tastes rancid, drenched in an indescribable sauce which is nothing more than goo. The food was pure salt. The patties were flat, burned, coated in a thick dusting of salt to cover for the spoiled meat taste. Their only saving grace for this place were the fries. The fries were delicious. Everything else made me want to vomit. read more

Mr Mushroom Burger Farm - Their a burger for all. Pure goop and salt. Their flat burnt patty. I can't believe a cow died for this. - Burgers Near Me - Pasadena, California

Great spot walking distance from where I work. A couple colleagues and I tried it out today for lunch and it was pretty dang good. The fries were very crispy, maybe even double fried, which smacked. The burger was great, a little messy, but well-seasoned, great char and nicely cooked. Service was great too. Highly recommend for those who are in the area looking for their new go-to burger spot. Will be coming back at some point to try their chili cheese fries. read more

Mr Mushroom Burger Farm - Menu - Burgers Near Me - Pasadena, California

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New burger spot in downtown Pasadena, offering vegetarian mushroom and beef burgers. They have a simple menu with a few different ways to enjoy a beef or vegetarian burger and a couple side options. I tried the All in burger with French fries. It was so good, I came back a second time to get the all in burger and asked for rosemary french fries and it was a great choice. It's very spacious inside with plenty of seating to dine-in or you can order togo. The only downside is the building has a bit of a funky smell but that's out of their control. The staff are friendly and I learned that the owner has a mushroom farm. Makes sense since the business has mushroom farm in the name. read more

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This burger is an extraordinary masterpiece, rivaling the taste of homemade perfection. The spot is spotless, and the friendly service makes the experience even more delightful! read more

Mr Mushroom Burger Farm - The Class Act Combo with Onion Rings - Burgers Near Me - Pasadena, California

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Best manager ever! He really enjoys the burgers! He made sure me and my boyfriend were completely seated and comfortable!

So... Here's the deal For the Best Burger on Earth - try the Class Act Double... The Bread.... "Aaahhhhiy... " ...sounds like you got redirected to a porn site cause you forgot to clear your history browser while you were opening up your laptop at the public library...yea it's like that ... tasty...and embarrassing cause you never came here before..."ahhh yeaaa!" The pickle - sweet and relishy for a go to "surprise !" Pickly flavor ...but still a pickle...and pickly...and relishy ... The cheese - stays melted like she's your biatch and you got her wrapped around your little finger...in this case ... she stays snug under the buns and hot ans melted for a cheesy goodness feeling that never goes away...again under the hermetically sealed insulation of these super special sesame buns... The onions - grilled and trying to be like the pickle by making the pickle a little jealous but doesn't have the looks to pull the heist off ...but enough to have you glancing sideways at the combo and the possible hall pass your wife will never give you for not sharing this part of the burger with her... The fries - like your dumb uncle - not better than the burger but annoying enough to interrupt your every Burger bite... gotta have an uncle around like this that breaks up the monotony of paradise meat flavors... All in all... You're now in "Burger Heaven... " ...do not pass go.. do not go to jail... do not collect $200 dollars... just go straight to "Burger Heaven..."... You won There is nothing left for you to do here anymore... Except come back again for another go at life...!!! Best burger on Earth! Now I ask thee... !? Am I lying !? I THANKS NOT!!!! I only bow down to these Burger Lords from now on... Think of this place as the Burger Mecca... And circle around it a few thousand lifetimes... There is no escaping the karmic goodness of THE BEST burger on Earth... Disclaimer: Any review contradicting what I just wrote here is garnering a straight pass to the very gates of Hell ... for being a faker and a hater... don't believe the haters... this Burger is the real BEST BURGER on URF! read more

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I attended a soft launch of burger farm an old Pasadena. It's a very nice new addition to all the restaurants in the area. I particularly like it because there really isn't a quick burger place close by. I ordered the mushroom burger, which was very tasty with fresh lettuce tomatoes and I opted for grilled onions. They also offer beef patties with all their burgers or you can get their original mushroom burger, patty. It is a nice location and has plenty of room to sit and eat. I believe they said their grand opening is coming soon. read more

Mr Mushroom Burger Farm - Mushroom burger - Burgers Near Me - Pasadena, California

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Came here after class a few days ago and it's easily my favorite burger I've had. Huge burger and a total steal for the price! Friendly staff is the cherry on top. Definitely stopping by here again. read more

Their signature mushroom burger tastes so good. There's just something about the mushroom patty that makes it taste clean, healthy, and filling. People there are also friendly and chill. read more

Mr Mushroom Burger Farm - Mushroom burger - Burgers Near Me - Pasadena, California

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I enjoyed the Mr. mushroom burger. The mushroom patty was not highly seasoned. The pickles and onions added to the taste. Lettuce & tomato & vegan cheese added color. The whole wheat bun added to the vegetarian burger. I was happy to order a side of rosemary potatoes which were savory and crispy. Service was friendly and helpful. The restaurant is minimalist, very clean with tables at entrance main area and a room adjoining. Order at the counter and a server will deliver to the table you choose. read more

Mr Mushroom Burger Farm - A bite of Mr Mushroom Burger and rosemary potatoes. - Burgers Near Me - Pasadena, California

Parking can be hard as it is in the heart of old town. It's quite expensive. I just tried the regular mushroom burger, and was really excited, but ended up being let down. It was very bland. Like, you can really taste the healthiness I guess. Nothing special. The staff were very kind though! There's also a pretty big interior. read more

Really delicious fries and burger. Great service and very spacious restaurant. Hope there's more people that give this place a try! read more

Mr Mushroom Burger Farm - Mushroom burger & popcorn chicken+ fries - Burgers Near Me - Pasadena, California

First impression was that the interior is super spacious and clean. They have a nice selection of burgers that are on the pricier side but also deliver on quality. The double class act was satisfying and as standard as it gets. The patties were pretty thin but the flavors were great. The fries also were crispy on the outside and soft on the inside, and wonderfully seasoned. Nice addition to old town Pasadena. read more

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Every time I run through Old Town, I see a sign with a picture of a delicious burger that says "three bucks," so I finally decided to go check it out. Customer service was phenomenal; the guy was very friendly, very cool, and very funny. The place was super clean with wonderful music. The burger is a plant-based burger. I used to be vegetarian, and this is one of the best veggie burgers I've tried, and I have tried a lot. The other ingredients were top-notch. I definitely will explore their menu more just on their fantastic customer service alone. The food was delicious, and they also gave me a reusable bag very, very cool hidden gem of old Town Pasadena. read more

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Our friends told us to come here for the best fries ever!! The fries are wonderful. Big fries cooked to crispness with a soft interior. They are coated in a marvelous mix of seasonings. We were offered ranch or BBQ sauce with our fries, along with ketchup. The fries were really, really good. I had a tasty smashed burger with those delightful crispy edges. I loved it. My friend ordered a mushroom burger. She said she could hardly tell it was made from mushrooms. We were so hungry after a long day of museum hopping and gobbled everything right up.But we still couldn't finish the large portion of fries that we ordered, even though we tried. I got a take out box for the leftover fries and when I was walking around window shopping, a neighboring shop owner said " Did you get those Fries at Mr Mushroom Burger? Aren't they amazing?" So it seems they have made quite name for themselves with the fries! The decor is very clean and fresh with nice new tables and chairs. Everyone should try this relatively new burger place and definitely get the fries also. We arrived at 3:00 in the afternoon, between meal times and there were not many people there. I hope they get more customers at lunch and dinner times because the employees are super nice and helpful. We always want to support small local businesses!! read more

Mr Mushroom Burger Farm - Smashed burger with cheese, lettuce, tomato, pickles....yum. - Burgers Near Me - Pasadena, California

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First, let's talk customer service. Customer service was great, very attentive and friendly. We ordered a Burger with long cut fries and a mushroom patty on the side. Burger- was on the thin side, like a smash burger with lettuce, tomato, pickles, American cheese and onions on a brioche bun, the mushroom patty was a lot thicker. The overall taste was good, the fries were long, thick and crispy and well seasoned (crave worthy ) Loved the ambiance/ the music was classic and to my liking! I'd give this place a try if you're out in old Town Pasadena. It's on fair oaks, walking distance from Colorado blvd. They also have breakfast burritos. read more

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Great taste, affordable and nicely designed everything. Ordered doordash for lunch: was prepared timely and well. Beautiful bag! read more

Mr Mushroom Burger Farm - reusable bags containing warmth - Burgers Near Me - Pasadena, California

The burgers and roasted potatoes are delicious. However, I ordered a side of onion rings for $5.25 via Door Dash today and there were exactly 5 pieces. Each ring was over a $1... read more

Mr Mushroom Burger Farm - 5 pieces of onion rings for $5.25. - Burgers Near Me - Pasadena, California

This was one of the most delicious hamburgers in town!! I had the poppy and the prime cut beef was seasoned perfectly. And the mixture of grilled onions, secret sauce, American cheese, lettuce on their poppyseed bread was amazing!! The service was fabulous. I want a smile and the place was very clean with a light atmosphere!!! I will definitely be coming here again! Yummy!! read more

Long before I became vegan, I loved vegetarian food, and have tried just about every kind of garden burger, from the first seedy patties to beyond meat and other alternatives. A lot of them were bread heavy or found other ways to distract from the patty. On a random search for vegan alternatives in Pasadena, I wandered into this place - which was not busy, but should be Dash and was immediately greeted by the staff, who asked me if I had been there before and if not wear it I heard about it. They walked me through my choices, and I settled for the Mr. mushroom burger in the side of fries. Throughout this whole experience, the staff was very invested in what I thought and if I had any feedback, so keep that in mind. When I got the burger, it was already beautiful to look at. It looked like an ad for the burger. The ingredients looked super fresh, everything was colorful. I have to tell you that the ratio of ingredients and the quality of a patty were amazing. It wasn't the biggest burger I've ever had, but it didn't need to be. It was exactly what I wanted, and the magic of the mushroom got me. I finished the burger without even touching the fries, I didn't want to put it down. The Robin to the Batman was absolutely the fries. They were incredible! I used to go to diners and ask them to burn the fries to a crisp because I always used to get them so soggy, and these were the perfect crispy consistency that I love in fries. The seasoning was great; I didn't need any condiments. I could not stop eating them. I could have ordered another basket of fries to take with me, but I decided to not go overboard, because there's a vegan bakery in the area and I wanted to walk there. I could not recommend this place more, and I do want to go back to try some of the other side dishes and and have that burger again. read more

Mr Mushroom Burger Farm - The Mr. Mushroom burger, made with a farm to table mushroom patty. - Burgers Near Me - Pasadena, California

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I'm really excited that we finally have a local burger joint in Old Town, especially one that caters to both vegans and carnivores. My husband got their vegan mushroom burger on a wheat bun while I opted for the All In, lettuce wrap burger. It was delicious and juicy and went very well with their thick-cut, crispy fries. Service was prompt and kind, and the place is spacious. read more

Mr Mushroom Burger Farm - Vegan mushroom burger with fries - Burgers Near Me - Pasadena, California

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Great tasting burgers at reasonable prices! If you have not stopped by here you should put it on your list of stuff to do for lunch. I will come back for more good tasting burgers and seasoned fries! read more

The burgers and fries here are seriously delicious! Service is super quick, and the staff couldn't be friendlier--they always make us feel welcome. This isn't our first time coming, and it definitely won't be our last. Thanks for another great visit! read more

Mr Mushroom Burger Farm - Burger and fries! - Burgers Near Me - Pasadena, California

I had the Best experience at Mr Mushroom Burger Farm this evening! The team members were so warm, welcoming and me feel right at home! The mushroom burger was a hit! The mushroom patty is so well crafted with such a delicious flavor! The lettuce, tomato and golden brioche bun was so fresh! The fries are my absolute favorite with a light, crisp, and flavorful batter that was just perfection! I love the bright and spacious dining area and will definitely enjoy my meal there next time! read more

Mr Mushroom Burger Farm - Delicious mushroom burger! The best mushroom patty I've ever had! - Burgers Near Me - Pasadena, California

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Hidden gem in Pasadena. An unassuming exterior leads you into a clean/open environment filled with smiles. A must try! Great fresh beef burgers. The mushroom burger looks delicious for all lu vegetarian friends. Top notch service from the tome you walk until the moment you leave. Special thanks to Danny! read more

This burger was so good -- and seriously huge! It had both a beef patty and a mushroom patty, which I didn't expect to go so well together, but it totally did. Juicy, flavorful, and the fresh lettuce gave it a nice crunch. And I'm usually not a big potato person, but these were something else. Thick-cut, crispy on the outside, soft inside, and packed with flavor. Even I was surprised by how much I liked them. Definitely a meal worth coming back for! read more

Mr Mushroom Burger Farm - Fried with All In Burger - Burgers Near Me - Pasadena, California

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Burger might be good but there was too much sauce. Fries are overly salty. The ordering interface was screwy. We didn't select ketchup or mustard but it was on the burger. We still tasted pickles though we didn't order any. Not so sure we'd try this again. read more

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We found this place through Yelp originally and were not disappointed. The burgers were cooked to perfection and the fries were the same. We also tried the onion rings which were crispy and delicious. They need to get a wider variety of drinks as there were not that many choices. We give it two thumbs up. read more