Creating the Classic Patty Melt is a straightforward process. Follow these simple steps for a delicious sandwich experience:

1. Caramelize the Onions: In a skillet over medium heat, melt 1 tablespoon of butter. Add the sliced onions and cook slowly until they turn golden brown, about 10 minutes. Stir occasionally to prevent burning.

2. Prepare the Patties: While the onions are cooking, divide the ground beef into two equal portions. Form each portion into a patty, slightly larger than your bread slices. Season with salt and pepper.

3. Cook the Patties: In another skillet, heat a little oil or butter over medium-high heat. Add the patties and cook for about 3-4 minutes per side for a medium-rare burger. For more doneness, adjust cooking time as desired.

4. Melt the Cheese: In the last minute of cooking, layer a slice of cheese on each patty. Cover the skillet with a lid to help the cheese melt.

5. Butter the Bread: While the cheese is melting, spread butter on one side of each slice of bread.

6. Assemble the Sandwiches: On the unbuttered side of two bread slices, layer the patty, caramelized onions, and top with another slice of bread, buttered side out.

7. Grill the Sandwiches: In the same skillet used for the patties, place the sandwiches. Grill on medium heat for about 3-4 minutes on each side until golden brown and crispy.

After following these steps, your amazing Classic Patty Melt is ready to be enjoyed!