1 lb. hamburger
2 (15 3/4 oz. each) cans Franco-American spaghetti
1 onion, chopped
1/3 c. catsup
1/4 c. water
1 tbsp. Worcestershire sauce

In skillet cook hamburger and onions together until well done. Add other ingredients; mix well. Pour into casserole. Top with Parmesan cheese. Put into 400 degree oven and take out when slightly bubbly.