Patty Melt Sandwich Recipe | Recipe Wisdom

Ingredients

• 2 tablespoons olive oil
• Butter, for the pan (optional)
• 1 red onion, sliced
• 1 pound ground beef
• 1½ teaspoons kosher salt
• ½ teaspoon freshly ground black pepper
• ½ teaspoon garlic powder
• ½ teaspoon onion powder
• ½ teaspoon smoked paprika
• 2 teaspoons Worcestershire sauce
• 8 slices marbled rye bread
• 4 tablespoons (½ stick) unsalted butter, softened
• 8 slices Swiss cheese
• 8 slices American cheese