Spaghetti Casserole
["1/2 lb. spaghetti (No. 9)", "onion, chopped", "mushrooms, sliced", "celery, chopped", "salt", "pepper", "16 oz. can tomatoes", "tomato sauce", "Cheddar cheese, grated"]
["Cook spaghetti with onion, mushrooms, celery, salt and pepper; drain.", "Add tomatoes and tomato sauce (in casserole).", "Top with grated cheese.", "Bake at 350\u00b0 about 45 minutes."]
["No", "onion", "mushrooms", "celery", "salt", "pepper", "tomatoes", "tomato sauce", "Cheddar cheese"]