Cream 120 g fat and 120 g sugar with the whisk of the hand mixer. Alternately add eggs and buttermilk while stirring. Mix 250 g flour, baking powder and salt, stir in by the spoonful. Peel 2 large bananas, cut into slices and fold in immediately. Knead 75 g flour, 40 g butter and 40 g sugar into light crumbles.
Knead 75 g flour, 40 g butter, 40 g sugar and cocoa powder into dark crumbles. Line the hollows of a muffin tin (12 hollows) with 2 paper sleeves each. Fill in dough. Spread crumbles on top. Bake in the preheated oven (electric range: 175 °C/ convection oven: 150 °C/ gas: level 2) for 25-30 minutes until golden brown. Let cool on a cake rack. In the meantime, peel the small banana, cut into slices and sprinkle with lemon juice. Melt the chocolate coating over a warm water bath. Dab the banana slices dry and dip them 1/3 into the liquid chocolate coating.
Let cool on a cake rack. In the meantime, peel the small banana, cut into slices and sprinkle with lemon juice. Melt the chocolate coating over a warm water bath. Dab the banana slices dry and dip them 1/3 into the liquid chocolate coating. Place on baking paper and let dry. Decorate muffins with the banana slices
30 minutes waiting time