Discover the ultimate comfort food with these Caramelized Onion & Swiss Patty Melts! Juicy beef patties topped with sweet caramelized onions and gooey Swiss cheese are grilled to perfection in this mouthwatering sandwich. Perfect for family dinners or cozy nights in, this recipe promises layers of flavor and texture that will delight every palate. Try it today and savor a classic dish that never goes out of style! #PattyMelt #ComfortFood #RecipeIdeas #SandwichLovers
1 lb ground beef (80/20)
1 large onion, thinly sliced
2 tablespoons olive oil
1 tablespoon butter
Salt and pepper, to taste
4 slices Swiss cheese
4 slices rye or sourdough bread
2 tablespoons mayonnaise
1 tablespoon Dijon mustard
Fresh parsley, chopped (for garnish, optional)