How to Cool a Cake and Remove it from the Pan
Sheet cakes should be removed while slightly warm. They are a little more difficult to turn out. Set a cookie sheet on top of your cake, invert it, and then remove the top pan.
Cool your angel food and chiffon cakes upside down in their baking pans. Don’t let the top of the cake touch the rack. Once cool, you can loosen the cake and ease it gently from the pan from the sides using a knife or spatula.