Directions for the cookies making:

1. Chop the chocolate into small pieces, like chips.
2. In a bowl or using a mixer, mix the softened butter with the sugar.
3. Gradually add the hazelnut powder.
4. Then incorporate the egg yolk and mix until you get a homogeneous mixture.
5. Add the flour mixed with the cocoa powder and fleur de sel in two batches.
6. Finish by adding the chocolate chips. You should get a creamy and homogeneous dough.
7. Roll out the dough to a thickness of half a centimeter and refrigerate for 30 minutes.
8. Preheat the oven to 150°C.
9. After 30 minutes in the refrigerator, cut out discs using a cookie cutter and place them on a baking sheet lined with parchment paper.
10. Bake for 17 minutes at 150°C.
11. Let cool.

Directions for the cookies decoration

1. Sprinkle the Christmas cookies with icing sugar.
2. Spread half of each cookie with the spread.
3. Add decorations using grated chocolate, cocoa nibs, and grated coconut.