In the heart of Knoxville, Tennessee, there’s a place where the steam rising from buffet trays carries the scent of childhood memories and the promise of a food coma you’ll happily surrender to.

Cheese lovers will find their nirvana in the “Cheese” omelet, which combines cheddar, Swiss, and American in a trifecta of melty goodness. It’s simple but executed with such precision that it elevates ...