Spaghetti Casserole
["1 lb. ground beef", "1/3 c. chopped onion", "1 (16 oz.) can stewed tomatoes", "1 (12 oz.) can tomato paste", "1 (4 oz.) can mushrooms stems and pieces, drained", "2 tsp. salt", "1 tsp. each: sugar, oregano and basil leaves", "1/2 tsp. garlic powder", "1/4 tsp. black pepper", "7 oz. thin spaghetti", "2 Tbsp. margarine", "1/4 c. Parmesan cheese (optional)", "8 oz. shredded Mozzarella cheese"]
["Heat oven to 350\u00b0.", "Brown ground beef and onion; drain.", "Stir in tomatoes, tomato paste, mushrooms and seasonings.", "Bring to a boil.", "Cook spaghetti; drain.", "Add margarine to spaghetti; toss to melt margarine.", "Place half of the spaghetti with half the meat mixture; repeat layers.", "Sprinkle with Parmesan cheese, if desired.", "Top with Mozzarella cheese.", "Bake at 350\u00b0 for 20 to 30 minutes, or until bubbling around edge.", "Makes 4 to 6 servings."]
["ground beef", "onion", "tomatoes", "tomato paste", "mushrooms", "salt", "sugar", "garlic powder", "black pepper", "thin spaghetti", "margarine", "Parmesan cheese", "Mozzarella cheese"]