Finely chop the almonds.
In a bowl, mix the almonds, flour, sugar, and butter to make a dough.
Melt the cacao mass using a double boiler or microwave.
Shape the dough and place it on a baking sheet.
Spread the melted cacao mass over the dough.
Bake in a preheated oven at 180°C for 20 minutes.
Let it cool before serving.