Burger 21

21305 Windmill Parc Dr #160, Sterling
(571) 665-5768

Recent Reviews Order Online

Customers' Favorites

Barbecue Bacon Cheeseburger
Bacon Cheesy Burger
Spicy Shrimp Burger
BBQ Bacon Burger
Chicken Sandwich
Half Half Fries
Super Burger
French Fries
Hamburger
Impossible

Menu

Featured items
French Fries Side
(336 cal)
#2 Cheesy
angus beef patty, 21 sauce, choice of cheese, lettuce, Roma tomato, toasted brioche bun (602-662 cal)
#3 Bacon Cheesy
angus beef patty, 21 sauce, applewood smoked bacon, choice of cheese, onions, lettuce, Roma tomato, toasted brioche bun (670-730 cal)
#1 101
angus beef patty, 21 sauce, lettuce, Roma tomato, toasted brioche bun (577 cal)
GF #3 Bacon Cheesy
angus beef patty, 21 sauce, applewood smoked bacon, onions, choice of cheese, lettuce, Roma tomato, gluten free bun (550-610 cal)
GF French Fries Side
(336 cal)
French Fries Shareable
(737 cal)
Sweet Potato Fries Side
(490 cal)
#50 Impossible
vegan plant based Impossible™ patty, onions, lettuce, Roma tomato, toasted whole wheat bun (474 cal)
Half + Half - Shareable
(936 cal)
#8 BBQ Bacon
angus beef patty, applewood smoked bacon, onion strings, hickory bbq sauce, cheddar, lettuce, Roma tomato, toasted brioche bun (770 cal)
#7 Tex Mex Haystack
Tex-Mex seasoned angus beef patty, applewood smoked bacon, onion strings, Pepper Jack, jalapeños, chipotle mayo, guacamole, lettuce, Roma tomato, toasted brioche bun (817 cal)
GF Vanilla Bean
(672 cal)
Bacon Cheesy 3-Pack
angus beef patties, 21 sauce, applewood smoked bacon, cheddar, lettuce, Roma tomato, King's Hawaiian® rolls (769-829 cal)
Kids' Beef Hot Dog
(346-779 cal)
GF French Fries Shareable
(737 cal)
Cookies + Cream
(824 cal)
Kids' Cheesy Burger
(359-864 cal)
Chicken Tender Basket
3 buttermilk-dipped, hand-breaded tenders, French fries (727 cal)
Farm to Bowl
grilled chicken breast, Romaine, Iceberg, goat cheese crumbles, fresh strawberries, toasted almonds, sweet + creamy balsamic vinaigrette (467 cal)

Beef Burgers
#2 Cheesy
angus beef patty, 21 sauce, choice of cheese, lettuce, Roma tomato, toasted brioche bun (602-662 cal)
#3 Bacon Cheesy
angus beef patty, 21 sauce, applewood smoked bacon, choice of cheese, onions, lettuce, Roma tomato, toasted brioche bun (670-730 cal)
#7 Tex Mex Haystack
Tex-Mex seasoned angus beef patty, applewood smoked bacon, onion strings, Pepper Jack, jalapeños, chipotle mayo, guacamole, lettuce, Roma tomato, toasted brioche bun (817 cal)
#1 101
angus beef patty, 21 sauce, lettuce, Roma tomato, toasted brioche bun (577 cal)
#10 3/4lb. OMG!
double-stacked angus beef patties, applewood smoked bacon, onions, choice of cheese, lettuce, Roma tomato, 21 sauce, toasted brioche bun (1005-1125 cal)
#8 BBQ Bacon
angus beef patty, applewood smoked bacon, onion strings, hickory bbq sauce, cheddar, lettuce, Roma tomato, toasted brioche bun (770 cal)
#4 Shroom
angus beef patty, mushrooms, caramelized onion, roasted garlic aïoli, Swiss, lettuce, Roma tomato, toasted brioche bun. (711 cal)
#9 Black + Bleu
blackened angus beef patty, applewood smoked bacon, bleu cheese crumble sauce, lettuce, Roma tomato, toasted brioche bun (750 cal)
#69 Southern Fried Pickle
Memphis slaw, beef patty, American cheese, crispy bacon, fried pickles, B21 sauce, toasted brioche bun

Chicken Burgers
#66 Crispy Chick
brined + hand-breaded crispy chicken patty, 21 sauce, lettuce, Roma tomato, pickles, toasted brioche bun (476 cal)
#13 Buffalo Chicken
crispy buffalo chicken patty, Frank's RedHot®, bleu cheese crumbles, ranch dressing, lettuce, Roma tomato, toasted brioche bun (561 cal)
#18 Monterey
grilled chicken patty, applewood smoked bacon, sun-dried tomato aïoli, jalapeño, avocado, pico, Pepper Jack, lettuce, Roma tomato, toasted brioche bun (819 cal)

Seafood Burgers
#16 Spicy Thai Shrimp
crispy shrimp patty, Sriracha, sesame Thai slaw, Sriracha aïoli, lettuce, Roma tomato, toasted brioche bun (632 cal)

Veggie Burgers
#17 Black Bean
black bean veggie patty, avocado, cilantro cream, onions, sun-dried tomato aïoli, pico, lettuce, Roma tomato, toasted whole wheat bun (718 cal)
#50 Impossible
vegan plant based Impossible™ patty, onions, lettuce, Roma tomato, toasted whole wheat bun (474 cal)

Tenders, Dogs + Sliders
Chicken Tender Basket
3 buttermilk-dipped, hand-breaded tenders, French fries (727 cal)
Bacon Cheesy 3-Pack
angus beef patties, 21 sauce, applewood smoked bacon, cheddar, lettuce, Roma tomato, King's Hawaiian® rolls (769-829 cal)
Cheesy 3-Pack
angus beef patties, 21 sauce, American, lettuce, Roma tomato, King's Hawaiian® rolls (679-739 cal)
101 Dog Combo
100% beef hot dogs, choice of condiments, New England roll, French fries (1206 cal)
Black + Bleu 3-Pack
blackened angus beef patties, applewood smoked bacon, bleu cheese crumble sauce, lettuce, Roma tomato, King's Hawaiian® rolls (1113 cal)

Fresh Salads
Buffalo Chopped Cobb
grilled buffalo chicken breast, Romaine, Iceberg, applewood smoked bacon, Gorgonzola, hard boiled egg, avocado, cucumber, Roma tomatoes, avocado-ranch (644 cal)
Super Burger Bowl
angus beef patty, Romaine, Iceberg, applewood smoked bacon, onions, carrots, Roma tomatoes, with choice of dressing (377 cal)
Farm to Bowl
grilled chicken breast, Romaine, Iceberg, goat cheese crumbles, fresh strawberries, toasted almonds, sweet + creamy balsamic vinaigrette (467 cal)
Santa Fe
grilled blackened chicken tenders, Romaine, Iceberg, black bean corn salsa, avocado, cheddar, tortilla strips, santa fe dressing (696 cal)

Fries + Sides
French Fries Side
(336 cal)
French Fries Shareable
(737 cal)
Sweet Potato Fries Side
(490 cal)
Onion Strings Side
(98 cal)
Half + Half - Shareable
(936 cal)
Half + Half - Side
(444 cal)
Three Cheese Sauce Side
(154 cal)
Three Cheese Sauce Shareable
(308 cal)
Fried Pickles Shareable
21 hand breaded and fried pickle slices, 21 sauce
Sweet Potato Fries Shareable
(1120 cal)
Onion Strings Shareable
(225 cal)
Fried Pickles Side
hand breaded and fried pickle slices, 21 sauce

Shakes + More
Cookies + Cream
(824 cal)
Chocolate Chunk Cookie
Freshly-baked twice daily. Single (320-350 cal)
Chocolate
(717 cal)
Bananas Foster
(815 cal)
Butterfinger Caramel Crunch
Vanilla Bean
(672 cal)
Chocolate Peanut Butter
(932 cal)
Strawberry
(740 cal)
Heath Toffee Crunch
Chocolate Fudge Brownie
(877 cal)
Triple Shot Espresso
Rich, dark + creamy with a bittersweet mocha finish

GF Burgers
GF #4 Shroom
angus beef patty, crimini mushrooms, caramelized onion, roasted garlic aïoli, Swiss, lettuce, Roma tomato, gluten free bun (591 cal)
GF #10. 3/4lb. OMG!
double-stacked angus beef patties, applewood smoked bacon, onions, choice of cheese, lettuce, Roma tomato, 21 sauce, gluten free bun (905-1025 cal)
GF #2 Cheesy
angus beef patty, 21 sauce, choice of cheese, lettuce, Roma tomato, gluten free bun (482-542 cal)
GF #1 101
angus beef patty, 21 sauce, lettuce, Roma tomato, gluten free bun (457 cal)
GF #3 Bacon Cheesy
angus beef patty, 21 sauce, applewood smoked bacon, onions, choice of cheese, lettuce, Roma tomato, gluten free bun (550-610 cal)
GF #9 Black + Bleu
blackened angus beef patty, applewood smoked bacon, bleu cheese crumble sauce, lettuce, Roma tomato, gluten free bun (650 cal)
GF #50 Impossible
vegan plant based ImpossibleTM patty, onions, lettuce, Roma tomato, gluten free bun (474 cal)

GF Shakes
GF Vanilla Bean
(672 cal)
GF Bananas Foster
(815 cal)
GF Strawberry
(740 cal)
GF Chocolate Peanut Butter
(932 cal)
GF Chocolate
(717 cal)

GF Fresh Salads
GF Buffalo Chopped Cobb
grilled buffalo chicken breast, Romaine, Iceberg, applewood smoked bacon, Gorgonzola, hard boiled egg, avocado, cucumber, Roma tomatoes, avocado-ranch (644 cal)
GF Super Burger Bowl
angus beef patty, Romaine, Iceberg, applewood smoked bacon, onions, carrots, Roma tomatoes, with choice of dressing (377 cal)
GF Santa Fe
grilled blackened chicken tenders, Romaine, Iceberg, black bean corn salsa, avocado, cheddar, tortilla strips, santa fe dressing (696 cal)
GF Farm to Bowl
grilled chicken breast, Romaine, Iceberg, goat cheese crumbles, fresh strawberries, toasted almonds, sweet + creamy balsamic vinaigrette (467 cal)

GF Tenders
GF Grilled Tender Basket
3 grilled tenders, French fries (727 cal)

GF Fries
GF French Fries Side
(336 cal)
GF French Fries Shareable
(737 cal)
GF Half + Half Fries Side
(444 cal)
GF Sweet Potato Fries Side
(490 cal)
GF Half + Half Fries Shareable
(936 cal)
GF Sweet Potato Fries Shareable
(1120 cal)

Beverages
Coca-Cola
Root Beer
Diet Coke
Bottled Water
(0-330 cal)
Sprite
Coke Zero
Unsweet Tea
Sweet Tea
Lemonade
Powerade

Kids' Meals + Shakes
Kids' Cheesy Burger
(359-864 cal)
Kids' Chicken Tenders
(376 cal)
Kids' Cookies + Cream Shake
Kids' Beef Hot Dog
(346-779 cal)
Kids' Chocolate Shake
Kids' Grilled Cheese
Served on a toasted Brioche bun (485-902 cal)
Kids' Strawberry Shake
Kids' Burger
(359-864 cal)
Kids' Vanilla Shake

GF Kids' Menu
GF Kids' Cheesy Burger
(259-764 cal)
GF Kids' Grilled Cheese
(385-802 cal)
GF Kids' Vanilla Shake
(436 cal)
GF Kids' Strawberry Shake
(457 cal)
GF Kids' Burger
(259-764 cal)
GF Kids' Grilled Tenders
(202 cal)
GF Kids' Chocolate Shake
(478 cal)

Photos

Photo credit: google
Photo credit: google
Photo credit: foursquare
+81 photos
Photo credit: foursquare
+80 photos
Add a photo

Recent Reviews

Pretty good; went with my friend and his girlfriend yesterday and it was cool. The different sauces were neat as well. My burger was slightly overly salted but the meal was pretty good!!
June 2025
Burgers are great! Ordered the 101 on my first time and the Bacon Cheesy on the next. Super juicy and flavorful. If you ask for medium, you get medium, unlike many other burger places. Service is nice, and doesn’t seem forced. Atmosphere is unlike any other, but in a good way; relaxed, mostly. All in all, great experience.

Tip: add some extra 21 sauce on the burger you get. It really makes it the best!
October 2024
I had the black & Bleu burger (med rare) and the onion strings. It's one of the best burgers I've eaten! Pleasantly surprised! The restaurant was very clean and the staff were super friendly! Great experience!
September 2024

More Reviews

You May Also Like

Nothing Bundt Cakes - 21305 Windmill Parc Dr #130
Bakery, Cupcakes, Gluten-Free
La Prensa Tacos & Tapas - 21305 Windmill Parc Dr Ste. 140
Tacos, Tapas Bar, Nightlife, Pet Friendly, Vegan
Cafesano - 21305 Windmill Parc Dr
Mediterranean, Italian, Vegan, Vegetarian

Burger 21

21305 Windmill Parc Dr #160, Sterling, VA 20166
(571) 665-5768