Make a shortcrust pastry from flour, 100g ground hazelnuts, sugar, vanilla sugar, salt, 1 egg and margarine, then chill for 30 minutes.
Beat 2 egg whites until stiff, sprinkle with powdered sugar. Fold in 125 g of ground hazelnuts.
Mix the hazelnut kernels, walnuts and chocolate drops.
Roll out the dough, cut out circles with a glass (diameter approx. 7 cm). Add 1 teaspoon of protein mass, then top with the nut-chocolate mixture. Fold the cookies together (leave them half open, do not close).