This banana cake is warm and hearty; it can be enjoyed as a quick brunch snack or as a comforting pudding. It's even better because it's so simple but extremely delicious too- in my house this cake disappears within hours! Begin by creaming together your butter with 165g of sugar. Once creamed together beat in eggs one at a time until light and fluffy. Next measure out 110g of self raising flour and 110g of plain flour; keep these separate. Then mash one banana using a fork. Then stir in half the banana with the plain flour and mix this together. Once smooth, stir in the other half of the banana along with the self raising flour and 1/2 a teaspoon of bicarbonate of soda. At this point an optional step would be to add 110g of finely chopped hazelnuts, however I'm skipping this step due to my allergy. Once you have a smooth batter, add vanilla extract. Bake in a preheated oven at gas ma