Preheat the oven to 190 ° C and grease the muffin tray well.
Peel the bananas and mash them with a fork. Mix the flour, baking powder, baking soda and chocolate sprinkles in a bowl. In a second bowl, beat the egg, sugar, oil, Nutella, banana milk and banana puree until frothy. Add flour mixture and stir in.
Pour the batter into the molds and bake for about 20-25 minutes.
That`s it !!!!!!!!!!
P.s .: The amount of ingredients is calculated for a muffin tin (12 tins) !!!!!