Quickly make a shortcrust pastry from all the ingredients (except espresso beans and couverture). If the dough is too soft, knead in the ground hazelnuts.
Wrap the dough well and chill for a few hours.
Shape the dough into balls, if you like, you can also use the piping bag and smooth perforated nozzle to make small balls.
Press an espresso bean into the middle, place on the baking sheet lined with baking paper and bake in the preheated oven at 170 ° for approx. 10 - 12 minutes.
Let cool and sprinkle a dab of melted couverture on the bean.