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Ultimate patty melt sandwich with secret sauce and grilled onions

Ultimate Patty Melt with Secret Sauce

A delightful twist on a classic diner favorite, featuring juicy beef patties, melted Swiss cheese, caramelized onions, and a tangy secret sauce, all nestled between crispy rye bread.
Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Course Dinner, Lunch, Main Course
Cuisine American, Diner
Servings 4 servings
Calories 800 kcal

Ingredients
  

Main Ingredients

  • 1 lb ground beef (80% lean) This will serve as the base for your juicy patties.
  • 1 medium onion, thinly sliced For that sweet and savory flavor profile.
  • 2 tablespoons butter To enhance the richness and aid in cooking.
  • 4 slices rye bread The perfect vehicle for all the delicious fillings.
  • 4 slices Swiss cheese Melty goodness that pairs wonderfully with beef and onions.

Secret Sauce Ingredients

  • 1/4 cup mayonnaise A creamy base for your secret sauce.
  • 2 tablespoons ketchup Adds a hint of sweetness and tang.
  • 1 tablespoon mustard A zesty kick that balances flavors.
  • 1 teaspoon Worcestershire sauce For depth and umami.
  • 1/2 teaspoon smoked paprika Infuses a subtle smokiness.
  • Salt and pepper to taste For essential seasoning.

Instructions
 

Caramelizing Onions

  • In a medium skillet, heat 1 tablespoon of butter over medium heat. Add the sliced onions, stirring frequently until golden and caramelized (approximately 12-15 minutes). Once caramelized, remove from heat and set aside.

Preparing Patties

  • While the onions are cooking, form the ground beef into two large patties, ensuring they are evenly shaped. Season both sides generously with salt and pepper to enhance the flavor.
  • In another skillet or a grill, heat over medium-high heat. Place the patties in the skillet and cook for about 3-4 minutes per side. Adjust the cooking time based on your preferred level of doneness.

Making the Secret Sauce

  • While the patties are cooking, prepare the secret sauce by combining mayonnaise, ketchup, mustard, Worcestershire sauce, smoked paprika, salt, and pepper in a small bowl until well blended.

Assembling the Patty Melt

  • Butter one side of each slice of rye bread. Place the bread slices, butter-side down, in the skillet where the patties were cooked.
  • Spread a generous amount of secret sauce on the unbuttered side of each slice of bread. Place a slice of Swiss cheese on the bread followed by a cooked patty, caramelized onions, and another slice of Swiss cheese on top.
  • Close the sandwich with the second slice of bread, buttered side up. Grill the sandwich for about 3-4 minutes on each side until golden brown and crispy, ensuring the cheese has melted.
  • Serve immediately and savor the deliciousness of your Ultimate Patty Melt!

Notes

For variations, try mixing in fresh herbs like thyme or parsley into your beef patties or using different types of bread like sourdough or whole grain. Add sautéed mushrooms or crispy bacon for extra indulgence.
Keyword Comfort Food, Patty Melt, Sandwiches, Secret Sauce, Ultimate Patty Melt