Atomic Cowboy home of Denver Biscuit Co & Fat Sully's NY Pizza. At our house, everything is made in house. From the biscuits and gravy to the red sauce and pizza crust, we make everything from scratch with generous portions. Enjoy Denver Biscuit Company's mile high house-made biscuit sandwiches all morning, or try Fat Sully's giant hand-tossed NY-style pizza and award winning burger all afternoon into the evening.