Four-Cheese Burgers

Ingredients

• 1 pound ground chuck
• 1 Vidalia or other sweet onion, chopped 1 tablespoon Worcestershire sauce
• 2 tablespoons grated sharp cheddar
• 2 tablespoons grated Monterey Jack
• 2 tablespoons grated Colby
• 1 thick slice mozzarella, quartered
• Sea salt and freshly ground black pepper to taste
• Vegetable oil cooking spray

Directions

1. Heat the broiler, charcoal grill, or gas grill to medium high. Put the ground meat, onion, Worcestershire sauce, and grated cheeses in a bowl, then use your hands to mix until everything is evenly worked through.
2. Shape the mixture into 8 very thin patties, making them the same size. Place the mozzarella pieces on 4 of the patties, then cover each one with one of the remaining 4 patties.
3. Pinch the edges together to trap the mozzarella inside, then give the burgers a light coating of cooking spray. Grill until the burgers are cooked all the way through, about 5 minutes per side.