Steak 'n Sheak Frisco Melts Copycat Makes several sandwiches 1 lb ground beef 8 slices sourdough bread 1 tablespoon butter onion, sliced thin and caramelized (optional) 8 slices American cheese 4 slices Swiss cheese Frisco Sauce: 2 Tbsp. Tostadas, Hamburger Recipes, Beef Recipes, Cooking Recipes, Fondue Recipes, Cooking Time, Beef Meals, Family Recipes, Frisco Melt