For the Nutella cupcakes, preheat the oven to 160 °C hot air. Place the muffin cups in a muffin tray.
Cream the butter with the sugar and vanilla sugar. Mix in the eggs a little at a time. Add a dash of Baileys and Nutella. Mix flour with baking powder and fold in. Add milk as needed.
Pour the batter into the ramekins and bake for about 12-15 minutes. Then let the muffins cool down.
For the Nutella topping, place Philadelphia heavy cream in a bowl and stir with the powdered sugar and cocoa powder until smooth. Add the Nutella and pour everything into a piping bag.
Pipe the Nutella mixture onto the muffins and sprinkle with decorations.