Creating a classic patty melt is a simple process if you follow these easy steps:

1. Caramelize the Onions: In a skillet, heat olive oil over medium heat. Add the sliced onions, salt, and pepper. Cook until softened and lightly browned, about 10 minutes. Remove and set aside.
2. Prepare the Patties: In a bowl, shape the ground beef into two equally sized patties. Season both sides with salt and pepper.
3. Cook the Patties: In the same skillet used for the onions, increase the heat to medium-high. Add the beef patties and cook for 4-5 minutes on each side or until they reach your desired doneness. Place a slice of cheese on each patty during the last minute of cooking to allow it to melt.
4. Butter the Bread: Spread butter on one side of each slice of rye bread.
5. Assemble the Sandwich: On the unbuttered side of two slices, layer the cooked patties (with melted cheese) and the caramelized onions. Top with the other slices, buttered side facing out.
6. Grill the Sandwich: Wipe the skillet clean and return it to the stove over medium heat. Place the assembled sandwiches in the skillet and grill until golden brown and crispy, about 3-4 minutes per side.
7. Slice and Serve: Remove the grilled patty melts from the skillet and let them cool for a minute. Slice in half to showcase the melted cheese and caramelized onions.

Follow these steps to make an incredible classic patty melt that’s packed with flavor and sure to impress!