Pat's Stuffed Turkey Burgers

Ingredients

• 2 cloves garlic, finely chopped
• 1/2 Vidalia onion, finely chopped
• 1 1/2 pounds ground turkey
• 2 teaspoons Dijon mustard
• 1 teaspoon soy sauce
• Salt
• freshly ground black pepper
• 8 slices pepper jack cheese, cut from an 8-ounce block
• 1 beefsteak tomato, sliced into 3/4-inch thick rounds
• Olive oil
• 4 large onion buns or rolls
• Spicy Mayo Sauce, recipe follows
• Lettuce
• 1/2 cup mayonnaise
• 2 tablespoons hot chili sauce (recommended: Sriracha)
• 1/2 lime, juiced