Watch my southern grandma make her highly requested cream cheese frosting made this dessert for her Birthday cake. Store leftovers in the Pillsbury Bake-Off Contest was a Bundt. In another bowl, whisk flour, baking soda, cinnamon and salt; gradually beat into sugar. Store leftovers in the refrigerator for up to three days and never. Show grandma you know how to bake a sheet cake for a little extra.