Ingredients
1 large onion, thinly sliced
8 slices of rye bread (or any bread of your choice)
1 lb ground beef
8 slices of Swiss cheese (or American cheese if preferred)
Butter
Salt and pepper to taste
Instructions
Caramelize the Onions: In a skillet over medium heat, melt a tablespoon of butter. Add thinly sliced onions and cook, stirring occasionally, until soft and caramelized, about 15-20 minutes. Remove from skillet and set aside.
Prepare and Cook the Patties: Divide the ground beef into 4 portions and shape into patties slightly larger than the bread slices. Season both sides with salt and pepper. In the same skillet, cook the patties over medium-high heat for 4-5 minutes per side, or until cooked to your preference. Remove from skillet and set aside.
Assemble the Patty Melts: Wipe the skillet clean and place it back over medium heat. Butter one side of each bread slice. Place 4 slices in the skillet, buttered side down. Top each with a slice of cheese, a cooked patty, a portion of caramelized onions, and another slice of cheese. Finish with the remaining bread slices, buttered side up.
Cook the Sandwiches: Cook the sandwiches for 3-4 minutes per side, pressing gently with a spatula, until the bread is golden brown and the cheese is melted.
Serve: Remove from skillet and cut each sandwich diagonally. Serve hot, accompanied by pickles, coleslaw, or your preferred sides.
Enjoy.