Blueberry Pineapple Cream
["4 c. cornflakes, crushed to make 1 c.", "6 Tbsp. margarine, melted", "6 Tbsp. sugar", "30 large marshmallows", "1 (8 oz.) can drained pineapple, reserve liquid", "2 (8 oz.) pkg. cream cheese, softened", "1 (8 oz.) carton whipped topping", "1 (21 oz.) can blueberry pie filling"]
["Preheat oven to 300\u00b0.", "Toast cornflake crumbs in a 9 x 13-inch baking dish for 8 to 10 minutes."]
["cornflakes", "margarine", "sugar", "marshmallows", "pineapple", "cream cheese", "blueberry pie filling"]