1. In large bowl, combine egg whites, crackers, 1/3 cup cheese, onion, salt, pepper.
2. crumble beef over mixture amd mix well. Shape into into 4 small loaves, place in an ungreased 11 x 7 x 2 inch baking dish. Top with 1/2 strip bacon.
3. Bake at 350 for 35-40 minutes. Sprinkle with cheese, bake 2-3 minutes or until cheese melts