Stuffed Burger

1 1/2 pounds ground beef
1/2 tablespoon Worcestershire
1 tablespoon barbeque sauce
1 large onion
2 tablespoons butter
2 tablespoons bacon bits
4 slices of American cheese
4 hamburger buns
1 teaspoon garlic salt
1 teaspoon fresh ground black pepper

Mix ground beef, bacon bits, barbeque sauce, Worcestershire sauce, garlic salt, and pepper. Cut onion into slices and sauté in butter. Form 8 thin patties from the ground beef. Cut each slice of cheese into 4 pieces. Stack cheese, and onions on top of 4 of the patties. Sandwich two patties together to form 4 burgers, sealing the edges well. Cook burgers in heavy bottomed skillet for about 4 minutes on each side until well browned.