In a fry pan brown 1/2 pound ground beef with 1/4 cup chopped onion. Mix in 1 can Campbell's cream of vegetable soup, 1 cup cooked tomatoes, 1/4 cup water and 2 cups cooked macaroni (about 4 ounce uncooked). Pour into 1 1/2 quart casserole. Top with 1/4 cup shredded mild process cheese. Bake in medium oven 375 degrees for 30 minutes. 4 servings.