Baked Spaghetti Casserole
["1 (10 oz.) can condensed cream of mushroom soup", "1 1/2 soup cans milk", "1/2 tsp. black pepper", "seasoned salt to taste", "sugar to taste", "1 (12 oz.) pkg. thin spaghetti", "1 pt. dairy sour cream", "1 1/2 lb. sharp American cheese, shredded (I used 1/2 mild and 1/2 sharp Cheddar)", "1 onion, minced", "1 c. rich crackers, crushed (see Cook's Note)", "1/2 c. (1 stick) butter or margarine"]
["Cook's Note:", "Use crackers such as Ritz or Town House."]
["condensed cream", "milk", "black pepper", "salt", "sugar", "thin spaghetti", "sour cream", "American cheese", "onion", "rich crackers", "butter"]