Pumpkin Chiffon Cake is a seasonal and flavorful dessert that is perfect for fall. It is made with pumpkin puree, cake flour, sugar, eggs, vegetable oil, and baking powder. The cake is baked in a tube pan and then inverted to cool. The result is a cake that is light and airy, with a warm pumpkin flavor. It is often served with a cream cheese frosting or whipped cream.