Loaded Sandwiches for Late Nights Fat Shack

Fat Shack in Thornton, CO

Treat the whole family to fun, over-the-top eats. Fat Shack is the place where fast food gets a serious level-up. Whether you're craving a classic quarter pounder or a sandwich stuffed with fried pickles, mozzarella sticks, and onion rings (that's why they're called fat sandwiches, not skinnies), Fat Shack has your number. Perfect for easy dinners or late-night indulgences, Fat Shack serves hungry families at all hours. In the mood for burgers, wings, or funnel cake bites? Fat Shack has comfort food open late in Thornton CO. Come craving, leave happy.

A Fatty Neighborhood Staple

Minutes from Webster Lake and Boondocks, Fat Shack is a perfect end-of-day stop. Are you and the kids starving after a long outing? Searching for food open late on 120th Ave? Put a smile on everyone's face with some cheese fries or a loaded Fat Sandwich. Fat Shack is proud to be a part of the Thornton community. Stop in any time for a great meal, and smiles for everyone.

Just a Few Menu Favorites

Fat Shack Thornton is ready with classic comfort food – plus our over-the-top specials

Fat Sandwiches loaded with fries, chicken tenders, and sauces

Classic French fries – crispy on the outside, soft on the inside

100% Angus Beef Burgers (Single, Double, or Triple!)

Fried munchies and crispy wings

Deep-fried desserts and thick, creamy shakes

Craving something special?

Frequently Asked Questions

What time does Fat Shack Thornton close?

Fat Shack Thornton stays open through 3AM on Fridays and Saturdays. 1AM on weeknights.

Does Fat Shack Thornton offer delivery?

Yes! Order via the Fat Shack app or our website for delivery.

Does Fat Shack Thornton have a kids menu?

Yes! The Kids menu is available in-store; also, kids enjoy many items off our Munchies menu such as mac n' cheese bites, chicken fingers, and more. Fat Sandwiches are also available as Half Sandwiches.