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Smashing Patty Melts With Signature Sauce

This smashing patty melt combines juicy beef patties, golden caramelized onions, melted Swiss or American cheese, and a creamy signature sauce, all tucked between buttery toasted rye bread. It’s a diner favorite you can recreate at home with ease.
Calories:
Author: Sandra Myers

Ingredients

For the Patty Melts:

  • 1 lb ground beef 80/20
  • 1 small yellow onion thinly sliced
  • 8 slices rye bread
  • 8 slices Swiss or American cheese
  • 2 tablespoons butter plus more for toasting
  • Salt and black pepper to taste

For the Signature Sauce:

  • ⅓ cup mayonnaise
  • 1 tablespoon ketchup
  • 1 tablespoon yellow mustard
  • 1 tablespoon finely chopped pickles or relish
  • 1 teaspoon Worcestershire sauce
  • ¼ teaspoon garlic powder
  • Salt and pepper to taste

Instructions

  • Whisk together mayonnaise, ketchup, mustard, pickles, Worcestershire, garlic powder, salt, and pepper for the sauce. Let it sit to meld.
  • Melt butter in a skillet and cook onions until soft and golden, then set aside.
  • Divide beef into four portions, shape into thin patties slightly larger than the bread, and season. Cook 2–3 minutes per side until browned.
  • Butter bread slices. Layer cheese, a patty, onions, sauce, and another slice of cheese between bread, buttered side out.
  • Grill sandwiches in the skillet 3–4 minutes per side until golden and melty. Slice diagonally and serve hot with extra sauce.