1 1/2 lbs. hamburger
1/2 c. chopped onion
1/2 c. catsup
2 tbsp. brown sugar
2 tbsp. vinegar (optional)
1/2 tsp. salt
1/4 tsp. pepper
1 tbsp. Worcestershire sauce
1 (2 lb.) can pork & beans

Mix all ingredients well. Bake at 350 degrees for 35 minutes.