pure icing sugar, for dusting
*and no, the cake won't taste like potato
Preheat oven to 180C and grease a 22cm springform cake tin. Place the egg whites, vanilla, baking powder and bicarbonate of soda in a bowl and beat until firm peaks form. Beat the egg yolks, sugar, butter and cinnamon until thick and creamy. In a separate bowl, combine the mashed potato, banana, hazelnut and walnuts. Fold mashed potato mix in to the egg yolk mixture, then gently fold in the egg white mixture. Spoon the batter in to the tin and bake for 20 minutes, then cover with foil and continue to bake for 15 minutes or until a skewer inserted in the middle of the cake comes out clean. Serve dusted with icing sugar.
Batter ready for the oven.
Dust with icing sugar