Put the soft fat in a bowl. Add sugar, cappuccino powder, egg, cornstarch and a third of the amount of flour. Mix the whole thing well with a mixer on the highest setting. Finally, gradually stir the remaining flour into the dough.
Pour the dough into a piping bag with a star nozzle and squirt donuts, S-loops or hearts onto a baking sheet lined with baking paper. Bake the pastries at 200-225 ° C (gas: level 3-4) for 10-12 minutes.
Place the cappuccino shortbread cookies on a wire rack and allow to cool. For the topping, heat the chocolate fat glaze until it is thick. Dip the pastry halfway into the glaze.