1 lb. ground chuck
1 sm. onion, chopped
3/4 c. commercial taco sauce
1 tbsp. Worcestershire sauce
1/2 tsp. salt
1/4 tsp. garlic powder
8 hamburger buns
1 (6 oz.) pkg. sliced American cheese

Cook ground chuck and onion until meat is browned, drain off pan drippings. Stir in taco sauce and next 4 ingredients, simmer 5 minutes. Place opened buns on baking sheet. Spoon about 1/4 cup meat mixture onto bottom half of each bun. Top meat mixture with a slice of cheese. Bake at 350 degrees 4 minutes or until cheese melts and buns are warmed. Make ahead of time, wrap in foil; chill. Bake sandwiches in foil at 350 degrees for 25 minutes.