Ultimate Patty Melt with Secret Sauce

Ingredients:

1 lb ground beef

8 slices of rye bread

8 slices of Swiss cheese

1 large onion, thinly sliced

4 tbsp butter, plus more for spreading

Salt and pepper to taste

For the Secret Sauce:

1/2 cup mayonnaise

2 tbsp ketchup

1 tbsp relish

1 tsp Worcestershire sauce

1/2 tsp garlic powder

1/2 tsp onion powder

Salt and pepper to taste

 Directions:

Begin by mixing the secret sauce ingredients in a small bowl. Adjust seasoning to taste, then set aside.

In a skillet over medium heat, melt 1 tbsp of butter. Add the thinly sliced onions, season with salt and pepper, and cook until caramelized, about 10-15 minutes. Transfer to a plate.

Form the ground beef into 4 patties, slightly larger than your bread slices. Season both sides with salt and pepper.

In the same skillet, cook the patties to your desired doneness, about 4 minutes per side for medium. Remove and set aside.

Butter one side of each bread slice. To assemble, spread the secret sauce on the non-buttered side of 4 slices, add a slice of cheese, a patty, caramelized onions, another slice of cheese, and top with another bread slice, buttered side up.

In a clean skillet over medium heat, grill the sandwiches until golden brown and the cheese is melted, about 3-4 minutes per side.