Patty melts look at the indulgent richness, juiciness, and fattiness of classic cheeseburgers and ask, "But can we make it better?" This Diner-Style Patty Melt says yes— emphatically—by piling the sandwich with sweet and savory caramelized onions and melty Swiss cheese. With a touch of sour from the toasted rye bread, this Diner-Style Patty Melt tastes even richer than a traditional cheeseburger, so every bite leaves you craving more, even as it satisfies! Why go out when you can have the perfect patty melt at home?