Mix the flour, oatmeal, ground hazelnuts, sugar, vanilla sugar and baking powder with a spoon. First mash the banana in the skin, then take it out of the skin and push it through the prongs of a fork. Add the mashed banana, the oil and the soy-vanilla milk to the flour-sugar mixture and mix with a hand mixer until a batter is formed that resembles a sponge cake batter. Then add the dried fruits and nuts to the dough as desired and mix in.
Place in a greased loaf pan and bake in the preheated oven at 170 ° C for about an hour. Please do a chopstick test!
If the cake is too kneadable for you, you can replace part of the rye flour with cornstarch.