Preheat the oven to 150 ° C. Melt the butter with the sugar. Mix the flour with the baking powder, cinnamon and vanilla sugar. Mix the melted butter and sugar mixture with the flour using a mixer.
Then roughly break the bananas into pieces or cut and add. Mix with the blender until the bananas are chopped up (if you don`t have a blender, mash the bananas with a fork beforehand).
Now add the milk. As far as possible, continue to mix with the mixer, otherwise use a spoon (the dough will be quite thick and sticky, that`s how it should be). Finally add the nuts, the walnuts can be roughly chopped beforehand if you want.
Now grease a loaf pan and fill in the dough. Top with the nuts. Bake for about 50 minutes. Let cool and remove from the mold.
Tastes wonderful as a breakfast with cream cheese.