MEATBALLS:

1 lb. hamburger
1/2 c. bread crumbs
1/2 c. milk
1 egg
1 sm. minced onion
1 tsp. salt

SAUCE:

1 tsp. salt
1 minced onion
2 tbsp. butter
2 tbsp. prepared mustard
3/4 c. catsup
1/4 c. sugar
2 tbsp. vinegar
3/4 c. water

Mix meatball ingredients together and form into balls. Bake at 350 degrees for 20 minutes. Drain grease. Mix sauce ingredients together and pour over meatballs. Bake 1 hour.