Outside-In Burgers - cooking recipe

Ingredients

2 lb. lean ground beef
1 c. shredded Swiss cheese (4 oz.)
3 Tbsp. catsup or mustard
8 hamburger buns, split
lettuce
tomatoes

Preparation

Shape beef into 16 (1/4-inch thick) patties.
For filling, combine cheese and catsup or mustard.
Place about 2 tablespoons filling on each of 8 patties. Top with remaining patties. Press edges. Chill 3 hours. Grill, turning once.
Serve with lettuce and tomatoes.