Atomic Cowboy, Fat Sully's and the Denver Biscuit Company make up a three-in-one concept that has grown to seven locations and is known mainly for towering biscuit sandwiches and giant slices of pizza. It also serves up an unexpected item known as the Lights Out Burger. And it's perfect: Two smashburger-style patties, aged American cheese, housemade pickles, a layer of minced onions and a tangy burger sauce are all loaded onto a garlic butter-toasted brioche bun. The resulting burger is greasy in all the right ways and completely impossible to put down until every drippy bite is gone. It also rings in at just $8.95, and is an even better deal during happy hour, when the price drops to six bucks.