Roughly chop the almonds.
Melt the butter and beetulin chocolate together using a double boiler.
Add erythritol to the melted butter and chocolate, then mix well.
Add the egg and mix thoroughly.
Sift the almond flour, cocoa powder, and baking powder into the mixture and combine.
Fold the chopped almonds into the dough.
Shape the dough into cookies and place them on a baking tray.
Bake in a 180°C oven for 12-15 minutes.
Let cool to finish.