The butter and 1 cup sugar is broken down to the graying, add the yolks of the eggs (one by one), flour and vanilla. Messi soft dough that hangs in sheet, 1 cm thick. Egg whites with other cup sugar froth. Add the walnuts second and vanilla. First dough shapes are cut and stacked in the tray. On them, sprayed from the egg white mixture. Bake until slightly pinkish. Slightly chilled sprinkle with powdered sugar.