I don't think I have ever made a chiffon cake before but when I had some over-ripe bananas to use up, and was completely bored with banana loaf and muffins, this light and tender cake was the result.
Chiffon cakes are closer to a sponge cake than a butter cake. The dry ingredients are combined and then vegetable oil, eggs yolks, and flavouring are added to a well in the centre. Beaten egg whites are then folded into that mixture and then the batter is baked in an UNGREASED pan to allow for rising and inverted cooling. The cake is massive!
Lemon chiffon is probably the most common flavour of this type of cake but mocha, orange, chocolate, and banana are other options. It is very important to cool the cake upside down in the pan. When you remove it from the oven invert the pan on top of a bottle neck (I used a glass vinegar bottle) and allow it to cool completely. To remove from the pan, loosen sides with metal spatula and shake the pan slightly. I covered my cake with vanilla frosting, which went well with the banana flavour and everyone loved it. Make sure to cut your cake with a serrated knife to avoid squishing the airy slice.
Banana Chiffon Cake
2 cups flour
1-1/2 cups sugar
1 Tbsp baking powder
1 tsp salt
1/2 cup vegetable oil
5 egg yolks
1/3 cup water
1 cup banana puree
1 tsp vanilla
1 cup egg whites (about 8)
1/2 tsp cream of tartar
325 degree pre-heated oven. Ungreased 10" tube pan.
Combine flour, sugar, baking powder and salt. Make a well in the centre. Add vegetable oil, egg yolks, water, banana, and vanilla. Beat until smooth. Beat egg whites and cream of tartar until firm but not dry. Fold batter into egg whites with a rubber spatula. Pour batter into ungreased tube pan. Bake on bottom rack of oven 65-70 minutes until cake springs bake and cake tester comes out clean. Invert cake on bottle and cool completely