Creating Patty Melts with Secret Sauce is simple if you follow these clear steps:

1. Prepare the Secret Sauce: In a small bowl, combine mayonnaise, ketchup, Dijon mustard, Worcestershire sauce, smoked paprika, and salt. Mix well and set aside.

2. Cook the Onions: In a large skillet over medium heat, melt 1 tablespoon of butter. Add the thinly sliced onions and a pinch of salt. Cook, stirring occasionally, until caramelized and golden brown (about 10-15 minutes). Set aside.

3. Shape the Patties: In a bowl, season ground beef with salt and pepper. Form into two equal-sized patties.

4. Cook the Patties: In the same skillet, add another tablespoon of butter over medium-high heat. Add the patties and cook for about 4-5 minutes on one side. Flip and place one slice of cheese on each patty, cooking for another 4-5 minutes or until the beef is cooked to your desired doneness and the cheese is melted.

5. Assemble the Sandwich: On one slice of rye bread, spread a generous amount of secret sauce. Layer with a beef patty, caramelized onions, and top with another slice of rye bread.

6. Grill the Sandwiches: Wipe the skillet clean, return to medium heat, and melt a little butter. Place the sandwiches in the skillet and grill for 3-4 minutes on each side until they are golden brown and crispy.

7. Serve Warm: Once grilled evenly, remove from the skillet and cut in half. Serve immediately while still warm.

These straightforward instructions will guide you in creating flavorful Patty Melts with Secret Sauce that are sure to impress everyone.