Diablo Burger

Quite possibly the best restaurant burger I've ever had. The entrance with its wind tunnel was a bit odd, but once I was inside I was greeted with a friendly hello and a smile. Ordering was easy, and the person helping me knew the answers to my questions.

My food was cooked to order, and I had enough time to go next door to wash my hands, come back, and sit for a few min before it arrived. I couldn't have the English muffin bun (dairy allergy). They offered their gluten free bun, but I opted for a lettuce wrap instead. The burger was super juicy and this was messy, but not as crazy as I worried it might be, lol. My burger was cooked perfectly and was seasoned DELICIOUSLY. All caps deserved. Man, that was a good burger! The quality of their beef really shines through. Then the fries. The fries!!! Oh my yum. I loved how fresh they were, and the rosemary on them. I was stuffed, and for about $17.

A must try while in Flagstaff. This unique burger place has a tasty twist on flavors and burger style that I'm glad I came.

Overall id say to make sure to get some side sauces. I got some extra spicy mayo or something of the sort and it really helped spice up the burger and it was delicious at that point. If it was just the burger it might have lacked some flavor. The fries on the side are excellent.

Very satisfied

We were greeted by the waitress rolling her eyes at my family while we were looking through the menu... I guess we took too long. They messed up my order, wrong cheeses on burger. She suggested medium rare, and the burger came out still breathing it was so rare. When I asked about it, they tried to play it off and tell me it was medium rare and blame it on me, saying I was wrong. They then offered to fix it by "warming it back up" on the grill after I had taken a bite.

Uncomfortable chairs, way too expensive, and the burgers are tiny. I highly recommend saving your money and going to Dairy Queen down the street.

French fries were 10/10

I would give zero stars but the fries were solid.

We were visits when it was cold and traveling with a dog. Patio was heated and covered. It was adequate.

Burgers on an English Muffin tasty. Service a bit grumpy- but hey who wants to work the holidays?

A mixed experience. Ultimately pretty good burger and fries. About $5 overpriced for a meal. There was an off putting metallic smell to the small dining area. Kitchen looked clean. The counter person suggested eating somewhere else twice before I had a chance to order. I felt like I had to prove I actually wanted to eat there.

Interesting and 'kitschy' spot in old town. Decent outdoor seating, but it was raining and cold, so we hopped inside to have some lunch. Place was pretty empty when we arrived, but filled up after we ordered and sat down. The inside is pretty tight, and designed kind of like half of a giant drum with a high ceiling and curved wall where the seating is. There was a bunch of construction going on 'upstairs' (like on the roof) so who knows what's happening.
We ordered at the counter when we first walked in, grabbed our number and sat at one of their high tables. The menu has some fun names for the different burgers. Took a while for our food to come out, burgers of course. Interesting that they use English muffins for the buns, which makes your burger a bit smaller than normal. Tons of "stuff" on them and they were quite messy to work with. The food is served on top of the pile of fries (way too many fries). The problem we found was that the drippings and 'stuff' all drip into the fries, making them soggy... didn't like that at all. Give me crispy fries any day. The burgers were just ok in my opinion. But, we are never one's to shy away from a new dining experience.

This place has been hyped up since the day I moved to Arizona. And five years in, I finally tried the infamous Diablo burger. I ordered the Big Daddy Kane, by the staff's recommendation, which had bacon, cheddar, pickles, and a Thousand Island sauce. I liked the biscuit bun! But otherwise the burger was pretty average. I wouldn't necessarily wait in a long line for it.

Their fries are made in peanut oil (hello nut allergy) so I ordered the side salad as replacement with an extra fee. The salad was big and good!

You order at the counter and then wait inside until they can seat you outside. There is no eating indoors... it's only for waiting for an outdoor spot after order. This gets a bit weird if you are here with a group but don't all arrive at once. No holding seats inside while you wait.

Staff was friendly all around.

The interior is very small, but the flavors are very big! I got the Blake burger and it was delicious. The portions are PERFECT. Enough that you're satiated, but not stuffed. And they have pickles, which is arguably the Most important component. Staff were courteous and efficient!

This is a very quaint restaurant with limited seating inside approximately 5 big tables. We were able to seat 7. They are high top tables, not the best for little kids.

Outdoor seating is a few large tables.

You stand in line to order, this evening the line was out the door and took about 15 minutes to get up to the counter to order.

Burgers are on the thicker side. Fries were good. Limited drink menu, lacking in basics for kids I.e lemonade (they have a sparkling lemonade).

The gluten free bun was good. Servers were very kind and helpful.

After hearing about it for ages, I finally made my way to Diablo Burger for dinner last night...

We had a party of 5 humans and 1 dog. My husband and our friend Dave had been before, while it was my first time experiencing it and the first time for my kids as well.

What I didn't know going in: it's a fast casual concept with a somewhat limited menu. We did have to wait about 10-15 minutes to place our order and another 10 mins or so to get seated at one of the community tables outside. It was worth the wait, however. DB is very good at what they do offer: locally sourced ingredients and delicious burgers, toppings, english muffins and fries.

I customized my burger with sharp cheddar cheese, spicy honey mustard, and Crimini mushrooms and followed the recommendation to have my burger cooked medium-rare. I enjoyed it very much and ate a fair share of fries with it too. I also ordered a salad for the table, but that was not a hit... I probably would stick to burgers in the future.

Everyone else enjoyed their burgers too, except for my 10 year old daughter. She normally does enjoy burgers but DB burgers are thicker than what she is used to, and she just was not into it. If you do have picky eaters in your group, this may not be the place for you, but there are plenty of other options nearby if needed.

Service was attentive and friendly enough, especially considering the fast-casual concept.

It may have been my first time at Diablo Burger, but it will not be my last!

I've heard about this place for quite a few years and finally had a chance to try it Labor Day weekend. The quality of the food and the vibe was great.
However, I wasn't a fan of the English muffin and the value for the food was not the best.
I'm glad I tried this place but don't know if I'll be back.