Preheat the oven to 180 ° C. Roast the almonds for 10 minutes and then let them cool.
Chop and melt the chocolate.
Beat butter, sugar and vanilla with a hand mixer until creamy.
Mix in eggs one at a time.
Mix the flour, baking powder, cinnamon, cocoa powder and salt and add to the butter mixture. Mix in the melted chocolate.
Finally fold in the almonds.
Divide the dough into 3 portions.
Shape each portion into a 25 cm long strand on a floured work surface.
Place the 3 dough sticks on a piece of baking paper with a gap between them. Bake in the oven for 20 minutes.
Take out of the oven and let cool for 30 minutes, then cut diagonally into slices with a sharp knife.
Place the biscuit slices on a baking tray and let dry for 35 minutes at 150 ° C.
Let cool on a kitchen rack and seal airtight.