Creating your own Classic Patty Melt is straightforward. Follow these simple steps to ensure a successful and delicious outcome:

1. Prepare the Onions: In a skillet over medium heat, melt 1 tablespoon of butter. Add the sliced onions and cook, stirring frequently, until they are soft and caramelized, about 10-15 minutes. Season with salt and pepper, then set aside.

2. Shape the Patties: While the onions are cooking, divide the ground beef into four equal portions and shape them into patties, roughly the size of the bread slices. Season both sides with salt and pepper.

3. Cook the Patties: In the same skillet that you used for the onions, add the remaining tablespoon of butter over medium-high heat. Once melted and foamy, add the beef patties. Cook for about 3-4 minutes on one side, then flip.

4. Add Cheese: After flipping the patties, place Swiss cheese slices on top. Cook for an additional 3-4 minutes or until the cheese is melted and the patties reach your desired doneness.

5. Build the Sandwich: Lay one slice of bread, a patty with melted cheese, caramelized onions, and top with another slice of bread on each sandwich.

6. Toast the Sandwiches: Clean the skillet, then butter the outside of the bread. Place the sandwiches back in the skillet. Toast over medium heat for about 3-4 minutes on each side or until golden brown and crispy.

7. Serve Immediately: Once toasted, take the sandwiches out of the skillet, let them cool for a minute, and then slice them in half for easier eating.