Grilled Cheese Bun Burgers Recipe: How to Make It

Ingredients

• 1 pound lean ground beef (90% lean)
• 2 tablespoons Worcestershire sauce
• 1 teaspoon garlic powder
• 1/2 teaspoon salt
• 1/4 teaspoon pepper
• 1 tablespoon liquid smoke, optional
• 1 tablespoon olive oil
• 5 tablespoons butter, softened, divided
• 1 large onion, thinly sliced
• 16 slices American cheese
• 16 slices sandwich bread