1 can tomato sauce
2 tbsp. vinegar
1 tbsp. Worcestershire sauce
1 tsp. dry mustard
1/2 tsp. salt
1/2 c. water
Chopped onion
1 1/2 lb. round steak
Pepper

Place steak in baking dish. Combine other ingredients and pour over steak. Cover and bake 2 hours at 350 degrees.