All you need is eggs, flour, vanilla sugar, granulated suger, butter, baking powder and cocoa.
Turn on the oven to 200 degrees celsius.
Melt 100 grams of butter and then let it cool down.
Whisk together 2 ½ cup granulated sugar with 2 eggs until it gets fluffy.
Beat in the remaining ingredients, 2 cups flour, 4 tablespoons cocoa, 1.5 teaspoon vanilla sugar, 0.5 teaspoon baking powder and the butter.
Pour the batter into muffin cups.
Put it in the owen for 10-12 minutes.
While you wait for the muffins to be done, you can lick the bowl.
You can devour them about 30 minutes after you took them out of the oven.