1 1/2 lbs. ground beef
1 onion, finely chopped
1 1/2 tsp. salt (optional)
2 cans Hunt's tomato sauce
3 tbsp. vinegar
2 tbsp. prepared mustard
2 tsp. Worcestershire sauce
1 c. fresh bread crumbs
1 egg
1/4 tsp. pepper
1/2 c. water
3 tbsp. brown sugar

Mix mustard and brown sugar together before mixing with the rest of the sauce to prevent lumps.

Mix together beef, crumbs, onion, beaten egg, salt (optional), pepper, and 1/2 can Hunt's tomato sauce. Form into a loaf and put in a shallow pan. Combine remainder of sauce and all other ingredients. Pour over loaf. Bake 1 hour and 15 minutes at 350 degrees. Baste occasionally.