Expert Tip: For the best results when making your old fashioned hummingbird cake, use an offset spatula to spread the frosting onto the cooled cake. An offset spatula makes it easier to spread the cream cheese frosting evenly and will give your cake a polished and professional look.Store: Leftovers can be stored in an airtight container in the refrigerator for up to three days. Refrigeration is needed because of the cream cheese icing. Freeze: You can easily freeze the cake, but without the c...