Cream sugar, vanilla sugar and butter until very fluffy. Then stir in the egg yolk.
Mix flour, baking powder, raisins and the grated chocolate to the mass and mix into a dough.
The dough should rest in the refrigerator for 1-2 hours.
Preheat the oven to 160 degrees.
Roll out the dough on the work surface about 1/2 cm and cut out the hearts with a heart cutter.
Place on a baking tray lined with baking paper and bake for about 10-12 minutes.
Let cool and decorate with the white chocolate and chopped pistachios.