Grease a springform pan with a tube bottom insert (26 cm Ø) and dust with flour. Preheat the oven (electric cooker: 180 °C/circulating air: 160 °C/gas: see manufacturer). For the dough, peel bananas and puree the pulp. Mix eggs, sugar, vanilla sugar, peanut cream and 100 ml oil. Add the banana puree. Mix 400 g flour with baking powder and stir in. Smooth the dough in the tin and bake in a hot oven for about 45 minutes.
Take the cake out of the oven and let it cool down for about 10 minutes. Then carefully remove from the mould and let it cool down.
For the cream just before serving, whip cream cheese with cream and icing sugar in a narrow, tall cup with the whisks of the mixer for approx. 3 minutes. Coarsely fold in caramel-peanut cream in streaks and spread on the cake.