Illegal Burger Writer Square

1512 Larimer St R12, Denver
(303) 634-1300

Recent Reviews Order Online

Customers' Favorites

Jalapeño Burger and Onion Rings
Boss Burger with Truffle Fries
Green Chili Cheese Fries
Undercover Cheeseburger
The Godfather Burger
Sweet Potato Fries
Root Beer Float
Mushroom Swiss
Off the Record
Illegal Sauce

BURGER
Going Legit
Build your own burger. Choose your bun and toppings. Add-ons are for extra charge.
Undercover Cheeseburger
Beef patty, hickory smoked bacon, cheddar cheese, lettuce, tomatoes, onions, pickles, mustard and ketchup.
Slinger
Beef patty, hickory smoked bacon, cheddar cheese, fried onion strings and BBQ sauce.
Illegal Cream Cheese
Beef patty, cream cheese, fried onion strings and fried jalapeno. Spicy.
BANNED DOG*
Build your own Hot Dog 100% Angus Beef Hot Dog
Off the Record
Beef patty, daikon sprouts, avocado, pepper jack cheese, lettuce, tomatoes, and Jalapeno Ranch.
Mushroom Swiss
Beef patty, sauteed mushrooms, grilled onions, Swiss cheese and house sauce.
Spicy Chicken
Grilled chicken, fried jalapeno, pepper jack cheese, lettuce, tomato, onions, and house sauce.
The Boss
Beef patty, grilled fresh pineapple, fried jalapeno, cheddar cheese, hickory smoked bacon, lettuce, tomatoes, onions and chipotle mayo. Spicy.
The Godfather
Beef patty, grilled bell peppers, grilled onions, pepper jack cheese, lettuce, tomatoes, and house Sriracha Ranch.
Chicken Club
Grilled chicken, hickory smoked bacon, avocado, lettuce, tomatoes, and house sauce.
Black Bean
Hand-crafted black bean patty with avocado, daikon sprouts, lettuce, tomatoes, and onions, served on a rustic wheat bun.
Street
Beef patty, split hot dog, avocado, cheddar cheese, lettuce, tomatoes, red onions, mustard, ketchup and chipotle mayo.
MOBSTER BURGER BOX (feeds 4 people)
Includes 4/5.3oz Burger Patties on brioche buns. Slammer Fries with chipotle mayo, 16 pc chicken nuggets with house bbq sauce & all burger fixings (lettuce, tomatoes, onions, pickles, mustard and ketchup. Upgrade to Bacon Cheese burgers +$
Swimming WTF
Beer battered cod, avocado, daikon sprouts, lettuce, tomatoes and lemon aioli.

DRINKS
MILKSHAKE
Boylan Soda
Root Beer Float
IB Water

FRIES & SIDES
Illegal Fries
Seasoned waffle fries with illegal sauce
Sweet Potato Fries
served with maple bacon dip
8 Chicken Nuggets App
served with house bbq.
Slammer Fries
House Fries served with chipotle mayo
Truffle Fries
House fries drizzled with Truffle Aioli, parmesan cheese and basil.
3 Accomplices
Thin cut fries, sweet potato fries & illegal fries served with 3 of our signature sauces.
RICE CRISPY
Green Chili Cheese Fries
House Fries topped with cheddar cheese and Homemade Pork Green Chili.
Green Chili Bowl

SALADS
AVOCADO CHICKEN CAESAR
Romaine Lettuce, Grilled Chicken, Parmesan Cheese, Croutons, Caesar Dressing
Ancho Cilantro Chicken
Romaine lettuce, grilled chicken, bacon, onions, sprouts, tomatoes, cheddar cheese, and ancho cilantro ranch dressing.
BBQ Black Bean Salad
Black bean Patty, Fried Onion Strings, Slice Tomatoes, Fresh Avocado, Romaine Lettuce, Shredded Cheddar Cheese with House BBQ & Ranch on the side.
Chicken Jalapeño Salad
Grilled Chicken, Fresh Pineapple, Fresh Sliced Jalapeños, Sliced Tomatoes, Fried Onion Strings, Romaine Lettuce with Jalapeño Ranch on the side.

KIDS BITES
Little Illegal
Mini Burger served with slammer fries and a drink
Kids Chicken Nuggets
served with slammer fries and a drink
KIDS Grilled Cheese
served with slammer fries and a drink
Kids Hot Dog
served with slammer fries and a drink

SAUCES
Side Ranch
Side Illegal Sauce
Side Chipotle Mayo
Side Truffle Aioli
Side Maple Bacon Dip
Side Sriracha Ranch
Side BBQ Sauce
Side Jalapeño Ranch
Side Lemon Aioli

Photos

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Photo credit: google
Photo credit: google
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Photo credit: google
+34 photos
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Recent Reviews

Great burger spot in Downtown Denver City Center!

I visited Illegal Burger with my significant other and we were both impressed. She had the Chicken Burger—crispy and delicious—while I had the special Kingpin Birria, which was juicy and full of flavor.

We really enjoyed the burgers, the fries, and especially the sauce that came with the fries. The only thing we didn’t care for was a side sauce that tasted a bit like plain oil.

Overall,...
June 2025
I came here last year and the burger was exceptional. As soon as I arrived this year ( an annual event at Red Rocks “BritFloyd” ) I had already decided to return.
Exceptional again ..
The staff are really friendly as well and finally it’s always been busy when I’ve been here
Thanks for the lovely burger
June 2025
If you are looking for a filling meal and you love a good burger, check out Illegal Burger! I found them by accident and they did not disappoint! The burger was flavorful and very juicy; the onion rings were excellent, as well. The only downside was that the bathroom was slightly dirty, but still usable.
June 2025

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Illegal Burger Writer Square

1512 Larimer St R12, Denver, CO 80202
(303) 634-1300