Ingredients
1 pound ground beef2 tablespoons finely chopped onion2 tablespoons chili sauce2 teaspoons Worcestershire sauce2 teaspoons prepared mustard4 slices American cheese or cheddar cheese, halved diagonally2 slices Swiss cheese, halved diagonally4 hamburger buns, split and toastedOptional: Lettuce leaves, sliced tomato, sliced onion, cooked bacon strips, ketchup and mustard
Preparation
Combine first 5 ingredients, mixing lightly but thoroughly. Shape into 4 patties. Grill burgers, covered, on an oiled rack over medium direct heat until a thermometer reads 160° and juices run clear, about 6 minutes on each side.
During the last minute of cooking, top each patty with 2 triangles American cheese and 1 triangle Swiss cheese. Serve on buns. As desired, top with lettuce, tomato, onion, bacon, ketchup and mustard.
