Rinse the prunes and get rid of excess moisture.
Pour the hazelnuts in hot water. After half an hour, drain the water and pour hot water again for 1 hour.
Preheat the oven to 180 °C degrees on "up/down" or "convection" mode. Bake the hazelnuts on medium-high for 15-20 minutes.
Let the hazelnuts cool completely. Peel the nuts from the skins by rubbing them between the palms of your hands.
Add the coconut oil to the chocolate and melt it in the microwave or in a water bath, stirring constantly.