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Crumbl - Diamond Bar

4.3 (122 reviews)
ModerateBakeries, Desserts
Closed 9:00 am - 10:00 pm

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Sung Y.

Came in for 6 mini cookies and they tasted like chemicals. I called the store and was told to bring the cookies back. They gave us a new box, but those tasted like chemicals too. The girl working there said they don't use cleaning agents and don't spray, but we literally watched her holding a spray bottle and a rag. After trying the second batch and tasting chemicals again, I asked for a refund. Instead, I was handed a business card with a phone number for a different location. Then I was told I had to email for a refund. Absolutely ridiculous that for a defective product I have to jump through hoops instead of getting a simple refund right away.

Delicious!!
Elizabeth V. M.

Delicious! Service was great! Had my order ready as I stepped in. Thank you This week cookies hit

Judy G.

Our coworkers have brought over a variety of cookies and I have tried soooo many flavors already and the best thing is it's by Target! The cookies are really filling that I eating one is too sweet for me but they have a cookie cutter that cuts it into 4 pieces and we all have a sample of each one. My favorite is the classic chocolate chip cookie and I can't wait to try more new (to me) flavors in the future.

Great Easter Haul!
Carne M.

Great choice for Easter treats! The employees are all so nice, too. The inside is clean and the parking lot isn't full of traffic. Thsi is a nice location.

Dani S.

Gimmicky! Not a good location, limited flavors and poor service. Been to several Crumbl locations, so I was excited to try this location when it just recently open up, sadly the experience was sub par. There was only 6 flavors, so we got one of each. All of them are powdery tasting, and very ordingary. The only one that was more representative of the Crumbl cookies I'm used to having is the peanut butter flavor. Plus, $5 for a cookie is definitely pretty steep for something that doesn't even taste good. Staff was not very nice, and didn't know how to smile. Very cold and rude. AVOID!

Carrot Cake Cookie
Airi G.

I must've gotten really lucky with the flavor I started with because I've heard that it can be a hit or miss. I've never been to Crumbl ever in my life and today was finally the day! The carrot cake flavor caught my eye so I was actually able to redeem that one with a coupon that I received. It was amazing. Of course, eating the entire thing at once is too decadent, but a few bites are all you need. The cream cheese frosting with the soft, chewy carrot cake cookie is perfection. I went super early in the morning so there was no line and the worker who helped me was really kind. I watched her assemble the cookie by frosting it and putting on the pecan garnish. This store is located right next to Starbucks so I feel like that would be a great combo.

Jenny R.

Needed to see what the hype is about and stop here last night for a sweet fix. Place was super cute and the decor had clean lines which I appreciate. The service is ok and I got The 4 pk cookie promo. To a slice off each one of the cookies and cream, buckey, the peanut butter chocolate and the chocolate chip. The peanut was probably the best out of the 4 but I didn't really care of the consistency, it just didn't taste like a cookie to me. It was more like a dense muffin? Got it off my bucket list. Won't be coming back for seconds at any of the locations.

Box
Francine L.

A new cookie spot has opened and it was my first time trying this place. They have other locations but I am glad they opened in the city of Diamond Bar. It is literally in the same plaza as Chilis, Starbucks, and Target. So if you are coming to this plaza you can go and try this new cookie spot. Got an order of six cookies two chocolate cookies and cream, two churros, one milk chocolate, and one classic pink sugar. Shared it between friends and my favorites are churros and the classic pink. I like these two the most because of the flavor it has. The classic pink tastes light and the churros do as well. There might be a tad bit too much frosting for me so I didn't have all of it. You can easily take it off if you are not a frosting person. But I would still say to try a little bit of frosting with the cookie. Overall I'm glad to try these delicious cookies they are unique and different.

Whitney I.

I have been to Crumbl before, just like this location. It is located in the same plaza as the Target in Diamond Bar. The store was really clean and nice. I like opening, so you could see the baking that they did in the back. It smells so good in there, smells like sweets and sugar! Like when you are baking cookies at home and the whole house smells. The team members were really nice. Everyone was very friendly, greeted me, and wish me a wonderful day! I went in to get a cookie. They all looked really good. There was a display of cookies at the register, so you know exactly what's there this week. They usually change your menu every week. So if you like something, make sure to go pack before the end of the week! Some cookies are sold cool, and some are so hot. Keep that in mind, when picking your cookie. I ended up picking the chocolate salted caramel. It was really nice. The chocolate cookie wasn't too sweet, so the caramel enhanced it. The sea salt really made it better. It was a little gooey, so messy to eat. But that's kind of expected! Cookies are about $5 - a little pricy, but they are pretty large. It's definitely a special treat to get!

Front Entrance
Jeff T.

So happy to have a closer Crumbl! Appreciate the welcoming staff and fast service ordering on their tablet. Everything is standard inside the building and the box! The cookies are good as expected! I also like how they have a public table outside their door to sit down. Perfect place to chill, especially if you want Jimmy John's or Starbucks next door.

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7 months ago

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Alex S.

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6 months ago

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11 months ago

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4 months ago

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11 months ago

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1 year ago

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2 months ago

The space is very clean. Easy to order on the kiosk or on line. Service is quick. People are friendly. The cookies are yummy.

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2 years ago

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7 months ago

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1 year ago

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4 months ago

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1 year ago

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10 months ago

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3 years ago

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3 years ago

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3 years ago

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6 months ago

Slowest service you can get. No greetings no asking just let you stand there forever. For this service crumbl you suggest tips? wtf

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3 years ago

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3 years ago

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1 year ago

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10 months ago

The cookie was really good and the service was great and I was able to get a good price on the cookies.I liked it really much.

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3 years ago

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3 years ago

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2 years ago

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2 years ago

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8 months ago

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3 years ago

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2 years ago

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1 year ago

Love the tres leches, Andes mint cake, the cookies and cream tres leches INSANE and biscoff cookie butter cake ! 10/10

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3 years ago

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7 months ago

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2 years ago

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1 year ago

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1 year ago

Good interior and great cookie line up love it. Would definitely come back next time get more cookies from here.

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3 years ago

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3 years ago

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1 year ago

Good for people who love super sweet cookies. Flavors are great variety but tooo sweet for me.

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Alex S.

Thank you for your review! ☀️

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10 months ago

Great service and always greeted when we walk in. Cookies were delicious and available.

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10 months ago

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11 months ago

These are too good, not good for my waste or my pocket but addicting for sure. Anything lemon or raspberry is my go to.

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Dropped by on a Wednesday night around 5:30pm. It was empty and no customers were inside…read more I decided to get the scallion oil noodles, a sausage, and a sweet soy milk. To be honest, the noodles were pretty salty for me, but my dad really enjoyed it. It was very flavorful and had lots of scallion oil flavor! The sausage was just a grilled Taiwanese sausage, my favorite. I wish they would give some garlic with it. And their iced sweet soy milk is my favorite.

This is a casual dining experience with good parking, close proximity to many other decent…read morerestaurants, and decent service. I went with my girlfriend on a regular Tuesday, there was no line and the wait for the food was about 15 minutes. The seats are kind of sketchy, they feel like they bend when you sit on them, but the place is otherwise clean. I was excited about this place but the food is really mediocre. It is nutritionally adequate (has some veggies and protein), but its flavor is seriously lacking. We both had the meat lovers crepe and I was waiting for the flavor to come together but none of the ingredients really worked well with one another. Really salty bits of bacon and spam with surprisingly bitter lettuce and a sauce that lacked any power to cut through the fat. I personally think this place is really missing a pork belly or beef slice protein option for savory flavor with less salt. The savory sauce is also lacking, something sweet like hoisin sauce might help a lot. The signature noodles are also a total ripoff, I expected at least some toppings for a whopping $8, but it was just some noodles with a couple green onions tossed on top. The sauce wasn't even that impressive, it tasted like sesame oil and soy sauce, and not even the good seasoning soy sauce. Very disappointed with the noodles for $8. At the end of the day, the only reason I would go here is because of the nostalgia of a Chinese crepe meal, but it fell below expectations. It didn't taste the worst, but for how unhealthy the meal is, it doesn't hit like a good old burger or some curry with naan.

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Needed a place to get some work day and Outpost Coffee really came in clutch…read more There were plenty of parking available in a plaza which is shared with other businesses. I went on a weekday before noon and had no issues with finding a spot. For ordering, they had a kiosk inside with pictures for reference as well. It does accept American Express. After ordering, it only took a few minutes before it was ready. As for the atmosphere, there were a few other people, but they were mindful of noise. The music was also moderate, so I was able to focus without any earphones. There was plenty of seating from the center table to seating at the wall and even window seats. There were outlets available near seatings at the wall. There was also free WiFi as well. At first it indicated you would only have WiFi access for 1 hour. However, after the hour, I reconnected and it refreshed the timer. For my coffee, I decided to get an iced Dalgona latte. They provided many pieces of Dalgona. I did ask to get this at regular sweetness and ice. Overall, after the Dalgona dissolved with the ice, it felt like a good amount of sweetness. It was decent, but I've come back to try other drinks!

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Crumbl - Diamond Bar - bakeries - Updated May 2026

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