Prepare the ingredients for the dough in a mixer (dough hook) to a smooth dough. If it is too soft, work in some more flour. Do not let the dough rise (it is a cold yeast dough –> therefore also do not use warm milk for the dough!)
Divide the dough into 3 parts. Roll out the first part to about 3 – 4 mm (using a strudel cloth is a great advantage).
Beat the egg whites, add the sugar.
Spread 1/3 of the egg white mixture on the rolled out dough (leave some space at the top, otherwise the filling will swell out) and then spread 1/3 of the ground nuts on top.
Using the strudel cloth, roll up the dough from one side. It should form a roll.
Cut out half moons from this roll with a drinking glass and place them on a baking tray lined with baking paper. Bake the crescents at 180 °C in the preheated oven for about 20 minutes (they should get a light color).
Proceed in the same way with the remaining pieces of dough. Sprinkle with powdered sugar before serving.