Servings: 3
Melt butter in a skillet over medium heat. Add sliced onions, season with salt, and cook covered for 5-6 minutes. Stir occasionally and cook on low for 30-35 minutes until dark brown. Deglaze with vinegar and set aside.
Form the ground beef into 3 patties and place them on a parchment-lined sheet tray.
Slice the rye bread and shred the Swiss cheese.
Heat a griddle or skillet to medium-high. Season the burger patties with salt and pepper, then cook for 3 minutes per side.
Butter each side of the rye bread and toast until golden brown.
Top each slice of toasted bread with Swiss cheese and caramelized onions. Add a cooked burger patty, then top with another slice of bread. Slice and serve.
Calories: 971kcal | Carbohydrates: 41g | Protein: 41g | Fat: 72g | Saturated Fat: 32g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 20g | Trans Fat: 3g | Cholesterol: 185mg | Potassium: 574mg | Fiber: 3g | Sugar: 8g | Vitamin A: 821IU | Vitamin C: 3mg | Calcium: 423mg | Iron: 16mg
Keyword Best Classic Patty Melt Recipe, Classic Patty Melt Recipe, Easy Classic Patty Melt Recipe