Beat the egg white and powdered sugar to a stiff egg white icing. Put 1/3 of it aside and process the rest with the other ingredients (but only 100g nuts), not with the whisk, but with a spoon. Finally knead. Roll out the dough on the remaining nuts about 8-10 mm thick and cut out stars.
Place these on a baking sheet with parchment paper and brush generously with the remaining egg white icing.
Bake at 150 ° C for about 10-12 minutes, after 8 minutes open the oven a little bit with a wooden spoon for the rest of the baking time.