Coarsely chop the peanuts. Peel 2 bananas and mash them in a bowl with a fork. Beat the maple syrup, vanilla sugar, peanut cream and oil with the whisks of the hand mixer until creamy. Stir in the banana.
Add yoghurt alternative. Mix the flour and baking powder and stir into the banana mixture and blend to a smooth dough. Finally fold in peanuts.
Grease the recesses of a muffin tray (12 recesses). Spread dough in them. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: see manufacturer) for approx. 18 minutes. Take out and let cool down briefly.
Remove from the tin and place on a grid lined with baking paper.
Roughly chop the chocolate and melt over a warm water bath. Cut 12 slices (approx. 1/2 cm thick) from the banana. Place 1 slice of banana on each muffin. Add chocolate with a spoon.
Let the chocolate dry.