In heavy skillet brown:

1-1 1/2 lb. ground beef
1 env. onion soup mix
1 tbsp. flour
1 (8 oz.) can tomato sauce
2 c. water
1 c. cooked macaroni

Mix, put in casserole pan. Sprinkle with 1/4 cup grated Cheddar cheese. Bake 15 minutes at 400 degrees.