Loved the small burger! Did not love the seasoning on the fries. But bonus points for the onion rings. Wish we could eat there!

Waited 34 minutes for two of the driest hamburgers, an order of fries/rings and a corn dog on a Sunday at 1:30pm We actually ordered cheeseburgers and neither of our burgers had cheese on them. We were not about to turn around and wait for them to be remade. The bun on my burger was triple the size of the patty. Everything was just dry. Fries needed salt. They didn't have ketchup. Boo to this place, we will not be returning. read more

Grandpa's Burger Haven - You can't tell but the party is like 1/3" thin - Burgers Near Me - Denver, Colorado

Since ownership changed so has the quality. The buns are not the same and they're now hard and dry. Doesn't taste anything like it used to which is wha made me love this place. Unfortunately, I probably won't be coming back. read more

Was a 35 year custo.er .fries are still good but the burger no longer fits the bun New ow er lost my business read more

After a day of Spring slush and some ski traffic, my young son was ravenous. He wanted McDonald's (don't blame me, he has two parents). Incredulous, I told him we'd try something better and headed south on Federal to Grandpa's We sat out on the picnic tables in the parking lot, literally a few feet from cars whizzing by on Federal. One bite of his small double burger made him forget all about that clown Ronald. He polished it off faster than you can say, "Wow, Dad, thanks for bringing me here. Can we come again?" That came after the burger disappeared. I went large and had my own double cheeseburger. Large is an understatement and I almost foundered after half of it and some fries. It was good cold later on. Grandpa's has real ice cream and it's deliciously filling. My chocolate shake was only half gone by the time we were back home. Grandpa's offers a trip back in time predating corporate frankenfood sameness. It reminds me of the old school drive-ups of my childhood with freshness and quality. Burgers are thin. Fries are fat and the shakes will put pounds on you. Recommended. read more

Grandpa's Burger Haven - Scenic view of Federal sets the mood - Burgers Near Me - Denver, Colorado

I had heard for years that I needed to try Grandpas Burgers. I finally went. It was a Sunday around 2pm when we arrived and saw a few people standing around waiting for their food. The place is super small and no seating inside. Just some people leaning against the wall, waiting for their food. We walked up and ordered, paid and gave us our ticket number. As we were walking outside a gentleman asked us what number we were and we were about 10 after him. Okay 10 orders. not bad. We stood outside in the sun, people watching on Federal for 10 minutes. 20 minutes. 30 minutes. 40 minuets. I started getting really antsy and annoyed. They finally called our number after 50 minutes of waiting. We sat down at their picnic tables basically in the road on Federal and unwrapped them. I have been waiting to try these forever. I will say those first few bites were amazing. Maybe it was cause I was so starving from waiting for long or maybe they really were that good, but that time frame to make some basic smash burgers is ridiculous! We could have gone to the store, bought some burgers and went home and grilled them in a shorter time. I will say the burger was really good, and HUGE but not worth that wait at all. read more

Stopped by Grandpa's Burger Haven for the first time, and wow--this place is the definition of a classic burger stand! I went with the double burger and a side of onion rings, and both were absolutely spot on. The burger was everything you want--HUGE, juicy, flavorful, and stacked high with fresh toppings. The soft bun held everything together perfectly without getting soggy. And those onion rings? Crispy, golden, and full of flavor--easily some of the best I've had in a long time. No frills, no gimmicks--just good food made the old-school way. If you're craving a solid, no-nonsense burger, Grandpa's Burger Haven is the place to go! read more

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Finally a decent burger in Denver I'm from TX. It's just a burger stand but better than most dine in places !!!! read more

Grandpa's Burger Haven - Burger fries and onion rings - Burgers Near Me - Denver, Colorado

Tried this place for the first time and I got the large double cheese burger . It was good. But the frys I didn't care for. Think they need to choose a different kind of fries. read more

Grandpa's Burger Haven - Large double cheese burger - Burgers Near Me - Denver, Colorado

An early dinner before an event. The burger was tasty for a fast food style thin patty. The fries are pretty good. We sat at the little tables outside. read more

Grandpa's Burger Haven - Burgers Near Me - Denver, Colorado

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Its heartbreaking to write a 1 star review to a place that what used yo be the best burgers ever to me. Im a Denver native and grew up blocks away. I have been eating at Grandpa's since childhood. I remember getting out of church on a summer afternoon. Going to grandpa's to get burgers and a cherry shake with my dad and siblings. I remember the numbers written on torn pieces or cardboard. Sitting in the car hearing the loudspeaker call out order numbers or standing inside watching them cook or the lady writing g people's orders on their bags. Now that im 36 and have moved east eating there comes only once in a very long time sometimes years. After over a year I decided to treat myself. I was so excited to go back to one of my most favorite childhood memories. To much surprise things were different. Very different this time. New menu board not the one with the push in red letters. Huge covering the window i used to watch the cooks works at as a kid. No more lady writing orders on your bag. A guy w a computer. Printed tickets. Oh and if you pay cash its c a different price then if you pay card. And I guess I get all of that. New updated menu to look nicer and better tech to keep up with the times. What almost made me walk out was the price. $27 for a large cheeseburger fries and a cherry shake????? Insane. The hype really made them jack the prices up to $30 a meal.......sad. Instead of listening to myself and walking out i paid. Luckily I showed up right before a rush so I didn't wait long. The food. Let's talk about the food. The burger tasted like lettuce w mustard amd bread a whole lot of bread. The patty is millimeters thick unseasoned. One thing about the burger I was impressed with was I noticed they must have hired a bunch maker. The bun was nice. But its pointless without a good burger inside. The fries not the same as they used to be. Thick unpleasant. And the giant shake i ordered didn't taste like the cherry shale I remember at all. Sad sad sad. So disappointed. Im sorry to say id never eat here nor recommend it to anyone. read more

A Denver institution. Old school, and delicious. I have been going here as long as I can remember, and it is still as good as ever. read more

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This place is consistently great. So far, with the new management, it's the same. Employees say management is nice. Please visit often. Everything is made fresh to order. They hire local. This is better than a chain burger joint. Since 1980, it's known for its wide, six-inch burgers -- "#1 on the big bun!" The beer-battered onion rings are delicious. read more

Big delicious burgers. I usually get the triple with cheese and it's tough to finish. The fries and onion rings are bangin. I wish they took orders over the phone. They just won't... read more

Grandpa's Burger Haven - Triple with cheese no onion. - Burgers Near Me - Denver, Colorado

Hands down the best O.G burger in Denver, add bacon with everything on it 4 patty xl large with fries and drink!

I have this problem that I'm immediately a fanboy of any business that's...well...been in business for a long time. Grandpa's Burger Haven has been a Denver mainstay since the 1960's. It's an old school burger joint doing it their way or the highway. And who doesn't admire that? Now there are a few rules when you come here. The words "modern" or "contemporary" or "21st century" are nowhere to be found. The burgers are gigantic, roughly the size of a large donut like an apple fritter. They have regular hamburgers or steakburgers, and they're available in different sizes. From the outside looking in, you'll notice this is a burger stand not a sit down restaurant. There is ZERO seating. These burgers are meant to be enjoyed in your car like the drive thrus of yesteryear. You can try to wait until you're home to dive in, but the greasy smell of that brown bag will force you to dive in. I burnt my mouth devouring those onion rings. Man, these were delicious! Crunchy, well seasoned and piping hot. I love a good onion ring and these were damn tasty. I couldn't believe the size of the large cheeseburger. The burger and bun are the size of your face. All burgers come with mustard, lettuce, tomato, onion and pickles. You might like your burgers differently, but I, in fact, love the simplicity of these old school burger flavors. Definitely on #TeamMustard in this house. It's a behemoth to eat. It won't blow your mind, but to me it was properly cooked and dressed. I liked it! For those who love those big, big buns, Grandpa's Burger Haven has you covered. Love it or hate it, they've been in business longer than half of the population has been alive. And to me, you have to respect places that have stood the test of time. read more

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Amazing burgers, classic old school type of joint. Fries are super crispy and yummy. I've only had the cheeseburgers, regular size and the big size. The big one really is large! I have yet to try the chicken sandwiches or the steakburgers, so we will see! Shakes are A1 read more

Grandpa's Burger Haven - Drinks - Burgers Near Me - Denver, Colorado

Now this is a classic burger joint! Some of the best burgers I've had... definitely come with an appetite because these are huge. If you wanna skip a line and simply grab food come in early, but if you wanna stop by for the experience of an oldies style burger joint come in at night with the rest of us hooligans! read more

We've passed this place for 17 years and tonight we finally stopped. Why did it take so long? Afraid of disappointment, shady federal spot, yadayada. Grandpa did NOT DISAPPOINT!!!! We got the double small cheeseburgers and omg tasty, perfect proportions and crispy edges to the patty- delightful surprising! Oh man and the onion rings- do not miss out!! At a point as we were devouring in the car- the hubs and I looked at each other and said we would totally bring Anthony Bourdain here at 1am and make sure to get the double large burger- the smalls were almost too much to Finish and the size of the large is bigger than your face!! Next to try- orange shake and chicken fried steak burger!!! We will be back. read more

This place is a legit old school burger joint. Simple menu, very tasty food! Cool drive in sort of vibes. You order your food and then go back to your vehicle and chill until they call you order number over a loud speaker. The person who too my order was very friendly. 10/10 I will go back. I got a single small cheeseburger. Which was very good. Fries and rings were crispy even after traveling 15 minutes taking my food to go. (There is not seating, so gotta eat in your car or head out). The ONLY thing I would do different would be to order a double or triple patty next time. These patties are very thin. So cool this old burger joint has been able to be stay around for so long! Support this small local business when you are near and hungry. read more

Grandpa's Burger Haven - Small Single cheeseburger, Fries and Onion Rings - Burgers Near Me - Denver, Colorado

It was a good lettuce onion tomato sandwich. It tasted faintly of beef. That's because I ordered a cheeseburger. The onion and tomato were sliced thicker than that thin complimentary beef patty. I won't be back read more

Be careful here now that it has new ownership. The large fat cook looked at me like he hated me when I walked in. There was no toothpick through the rapper like there always has been, and I didn't think anything of it. When I started eating the sandwich, I found a very sharp toothipick purposely placed in the peripheray of the bun perfectly vertical and virtually invisible. There is no way this wasn't intentional and could have caused serious injury. I understand that there may some bad feelings out there because of all of the ICE arrests (which I don't support), but it's not okay to try and hurt an innocent person whom you know zero about. Don't go here again. Jim's burger haven had two locations in Thornton, and they don't sabotage your food. read more

Huge burgers, pork tenderloins, French fries and typical fried diner food. Few seats, take it to go read more

Never have an issues when ordering here, good food good customer service! I like that they have multiple options for toppings.

The most old school burger joint in Denver? Maybe. Nothing fancy and just like you want it from a walk up burger spot. This place has been here forever and probably will outlive most of Denver residents. read more

Great little old fashioned burger stand on Federal. No inside seating -- they have a couple of picnic tables in the parking lot but it's definitely a grab and go type place. Service is fast, burgers are big, fries are perfect, and the shakes are delicious. This is our go-to burger spot. read more

It's just all around good food. I have tried almost everything from this place and have never been disappointed.

Boy was I surprised when I ate here. I assumed it wouldn't measure up to all the hype, but honestly this place is one of the best treasures in Denver. It's the epitome of a classic hole in the wall burger joint. The burgers melt in your mouth, the onion rings were addictive. I'm now obsessed! The chocolate shake and corn dogs were also superbly yummy! I can easily see how this is a local favorite. A MUST TRY. read more

Grandpa's Burger Haven - Burgers Near Me - Denver, Colorado

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Grandpa Burger Haven has a cool old-school vibe that I really like. It's got that classic, no-frills feel, but the prices are a bit high for a hole-in-the-wall spot. The food is good, though, so it's worth checking out if you're into that kind of place. Just be ready to spend a little more than you might expect read more

Many years, of the same great hamburgers. Driven from Trinidad, just for the big bun burger.

Great burgers, fairly priced. I love this place and love the simplicity of their menu

This is an old-school burger place, but in the best of ways. Their large burger is seriously large, and pairs great with their onion rings. The only downside is that there is no seating, so you will need to eat in your car or take your food to-go. read more

Grandpa's Burger Haven - Large Cheeseburger - Burgers Near Me - Denver, Colorado

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I seen this on TikTok and we had to try it. We order a large hamburger, a small hamburger with fries and a chocolate milkshake. The hamburgers we really good and the fries were okay. The milkshake was good but couldn't drink it right away. The customer service wasn't really great but she was in her 70-80 so I can't really complain. read more

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The food here is very good, but your employee Mark has shit for an attitude and clearly doesn't like to help the customers that come in. Not everyone who comes to Grandpas Burgers has been visiting it for years and knows everything about the menu. (Mind you those menus are really antiquated and need to be updated as well) Rather than being rude Mark, when you see people looking a little quizzical or you can recognize that they need help, you should take some time to assist them and explain rather than rushing them. Any questions i did have i sure i didn't want ask the guy being a dick at the register. read more

This place is a staple to Denver as the original large hamburger joint. Buns are toasted, meat is perfect thickness. Prices include tax so no fussing what the price is. Fries are trash but hamburger is a winner. read more

Long wait but well worth it!! Great food!!! it was my first experience with Grandpa's burger Haven I'd recommend it to all my family and friends! young & old!!!!! read more

Grandpas is always a classic big burgers taste like it was from the 80's when I was growing up. Definitely a place to go for a good burger

Service isn't the best. Food is not worth it. Way too expensive for the quality. Burgers and fries. Fries over cooked, breed toasted so much it crumbles and the meet is burnt like charcoal. read more

I cannot visit Denver without visiting Grandpas!! I was just in Denver for about a week and went 3 times!!! If you have never had a Grandpas burger, you should definitely have 1, or several!! I highly recommend a double meat cheese! Their onion rings are great, I always dip them in ranch!!! Try a shake while you're at it, for the full experience!!! read more

Grandpa's Burger Haven - Just to show how big their burger is!!! Definitely #1 on the big big bun! - Burgers Near Me - Denver, Colorado

After trying to rip me off for more than $12. The fat cook got involved and proceeded to try and rip me off again. He threw my order at me at told me to leave. They would not give me a detailed receipt nor would they explain why they double charged me for sodas and shakes DO NOT AND I REPEAT LET THESE BULLIES RIP YOU OFF!! Terrible terrible customer service read more