1 1/2-2 lb. round steak
2 tbsp. oil
1 med. onion, chopped
3 tbsp. sugar
2 tsp. salt or seasoned salt
3 tbsp. Worcestershire sauce
2 tbsp. prepared mustard
1 (8 oz.) can tomato sauce
1 c. water

Cut meat into serving pieces. In large fry pan, brown meat in hot oil. Add remaining ingredients; stir to combine. Simmer, covered, 1 to 1 1/4 hours or until meat is tender.