Classic Patty Melt

#### Instructions

**1. Cook the Onions:**

- Warm olive oil in a skillet over medium heat.

- Slice onions into thin rings and add to the skillet. Cook until softened, about 5 to 7 minutes.

- Add salt, stir, then add white wine. Cook until the liquid evaporates.

- Reduce heat, add butter, and cook until onions are golden brown, about 10 to 15 minutes. Remove from heat and transfer to a plate.

**2. Make the Patty Melt:**

- Wipe out the skillet and add enough oil to coat the surface over medium heat.

- Shape ground beef into patties, season with salt, and cook until browned, about 3 to 5 minutes per side for medium-rare.

- Place burgers on a wire rack. Butter one side of each bread slice.

- In the skillet, place a slice of bread buttered side down. Add cheese, a patty, onions, more cheese, and another bread slice (buttered side up).

- Cover and cook for 2 1/2 minutes, then flip and cook for 1 more minute.

- Remove the patty melt from the skillet and repeat with the remaining ingredients.

Serve hot and enjoy your deliciously classic patty melt!