Put the eggs, oil, chocolate powder, coffee, sugar, milk and vanilla sugar in a bowl and stir. Mix and stir in the flour and baking powder, fold in the chocolate. Fill the dough into muffin molds and bake in the preheated oven at 150 ° convection (170 ° top and bottom heat, gas 3) for about 20 minutes.
Tip:
After 10 minutes of baking time, you can add more chocolate chips to the muffins. The muffins can still be decorated with bright colors.