Apples are peeled, cleaned and cut into slices. In a baking dish or suitable pan greased with plenty of butter, sprinkle 2 tbsp granulated sugar, ordered one layer of apple slices and pour on them walnuts. Then pour half the egg whites beaten with powdered sugar on snow, rank the remaining apple slices on top and pour the rest of the egg white mixture. Bake in preheated oven until lightly browned.