4 eggs (yolks and whites separately)
150g powdered sugar
120g caster sugar
1 baking powder
1 Vanilla sugar
1. Mix flour, butter, egg yolks, powdered sugar and baking powder.
2. Make the dough.
3. Peel and grate the apples.
4. Roll out half the dough and put on it grated apples. Sprinkle it with cinnamon and vanilla sugar.
5. Whip egg whites and put it also on the dough. On top grate the other half of the dough.
6. Put it to the oven and bake.