Spaghetti-Chicken Casserole
["1 (8 oz.) box spaghetti", "1 onion, cut fine", "2 Tbsp. oil", "2 1/2 c. canned tomatoes", "salt and pepper to taste", "1 Tbsp. sugar", "dash of red pepper", "1/2 to 1 c. diced cooked chicken", "1 c. mushrooms", "grated Cheddar cheese"]
["Cook spaghetti, drain and put in casserole dish.", "Saute onion in oil until tender, but not brown.", "Add tomatoes, salt, pepper, sugar and red pepper and heat to boiling.", "Add chicken and mushrooms, then pour over spaghetti.", "Toss with a fork.", "Sprinkle with grated cheese.", "Bake at 350\u00b0 until mixture is heated through and cheese is melted.", "Serves 6 to 8."]
["onion", "oil", "tomatoes", "salt", "sugar", "red pepper", "chicken", "mushrooms", "Cheddar cheese"]