1 minced onion
1/4 c. cracker crumbs
1 egg
2 lbs. ground beef

Mix the 4 top ingredients.

1 (8 oz.) can tomato sauce
1/4 c. packed brown sugar
1/4 c. vinegar
1 1/2 tsp. salt
1/4 tsp. pepper
1 tsp. mustard

Mix last 6 ingredients in saucepan to make sauce. Reserve 1/4 cup of sauce. Mix remainder of sauce with meat mixture. Spread remainder of sauce over the top and bake at 350 degrees for 45 minutes.