Knead the dough ingredients until they are smooth and wrap in foil and leave to rest in the refrigerator for 1 hour.
Roll out the dough about 3 mm thick on a floured work surface and cut out any motifs. Cut out the same amount and the same motifs from the marzipan and place both on top of each other (dough below, marzipan above. You can also put both on top of each other and cut out, but there are too many useless leftovers !!).
Beat the egg whites into snow (but not stiff) and sweeten with a tablespoon of powdered sugar. Put some egg whites on each cookie and spread it to the edge of the cookie. Almond flakes are sprinkled on top.
Bake in a preheated oven at around 180 top / bottom heat for 12-15 minutes until light golden brown. Sprinkle the cooled cookies with the rest of the powdered sugar.