2 lb. ground beef
1 c. chopped onions
2 tbsp. butter
2 tsp. salt
1/2 tsp. pepper
1 c. ketchup
1 tbsp. sugar
3 tbsp. vinegar
1/2 c. water
2 tbsp. mustard
2 tsp. Worcestershire sauce

Heat butter in fry pan. Brown onions until transparent. Stir in meat, salt, and pepper. Add ketchup, sugar, vinegar, water, mustard, and Worcestershire sauce. Simmer for approximately 20-25 minutes. Serve over hamburger rolls.