Ingredients
For the Secret Sauce:
- ½ cup mayonnaise
- 2 tablespoons ketchup
- 1 tablespoon sweet pickle relish
- 1 teaspoon Worcestershire sauce
- ½ teaspoon garlic powder
- ½ teaspoon onion powder
- ¼ teaspoon smoked paprika
- 1 teaspoon sriracha (optional for heat)
For the Patty Melt:
- 1 lb ground beef (80/20 blend)
- 1 large yellow onion, thinly sliced
- 2 tablespoons butter (divided)
- 1 tablespoon olive oil
- 8 slices rye bread
- 8 slices Swiss cheese (or American cheese)
- Salt and pepper to taste
- 1 teaspoon Worcestershire sauce
Instructions
- Make the Secret Sauce:
- Combine all sauce ingredients in a small bowl and mix well. Refrigerate for at least 30 minutes to let flavors meld.
- Caramelize the Onions:
- Heat 1 tablespoon butter and olive oil in a skillet over medium-low heat.
- Add onions and cook slowly, stirring occasionally, for 25-30 minutes until golden brown and caramelized. Season with salt.
- Form and Cook the Patties:
- Divide ground beef into 4 equal portions and form into thin patties slightly larger than your bread slices.
- Season both sides with salt, pepper, and Worcestershire sauce.
- Cook in a skillet over medium-high heat for 3-4 minutes per side (for medium). Remove and set aside.
- Assemble the Sandwiches:
- Spread secret sauce on one side of each bread slice.
- Layer: bread (sauce side up), cheese, beef patty, caramelized onions, another slice of cheese, and top with another bread slice (sauce side down).
- Grill the Sandwiches:
- Melt remaining butter in a clean skillet over medium heat.
- Grill sandwiches for 3-4 minutes per side until golden brown and cheese is melted.
- Press down lightly with a spatula while cooking.
- Serve:
- Cut diagonally and serve hot with extra secret sauce for dipping if desired.
Pro Tips:
- For extra flavor, use a blend of Swiss and American cheese
- Try marbling some of the secret sauce between the patty and onions
- Use a cast iron skillet for the best crust on your bread
- Let the patties rest for 5 minutes after cooking before assembling
Enjoy your ultimate patty melt with its irresistible secret sauce!