Step 1 - Gather Ingredients
Yellow Cake mix - enough to make 3 layers of your favorite yellow cake
1 (8 oz.) carton frozen whipped topping, thawed
1 (8 oz.)carton of sour cream, OR 1 (8 oz.) package original cream cheese, softened
1 cup confectioners' sugar
1 teaspoon vanilla extract
1 (21 oz.) can blueberry pie filling