Peel 2 bananas. Mash the bananas in a mixing bowl with a fork. Mix bananas, 2 teaspoons cinnamon, sugar, vanilla sugar, oil and 1 pinch of salt with the whisk of the hand mixer
Mix flour and baking powder, alternately stir into the bananas with 100 ml soy drink. Coarsely chop the peanuts and 100 g biscuits, stir into the dough. Fill the dough into a greased springform pan (26 cm Ø), dust with flour and smooth it down. Bake in a preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: see manufacturer) for approx. 30 minutes, remove from oven and let cool on a cake rack
Mix 35 ml soy drink, icing sugar, peanut cream and 1/2 teaspoon cinnamon in a saucepan over medium heat with a whisk until smooth. Set aside and allow to cool slightly
Remove the cake from the springform pan and place on a plate. Spread the icing on the cake, except for 2 tbsp. for decorating. Peel 1 banana, cut into slices. Decorate the cake with 50 g biscuits, banana slices and the remaining icing
waiting time approx. 1 1/2 hours