2 lb. hamburger
1 onion, chopped
1/2 c. catsup
2 tbsp. brown sugar
2 tbsp. vinegar
2 tsp. prepared mustard
1 tsp. Worcestershire sauce
1 tsp. salt

Cook hamburger and onion in pan or skillet. Add rest of ingredients and simmer 15 to 20 minutes. Serve on warm buns.