Make kneading dough, knead all ingredients for the kneading dough in the Thermomix, TM31, for approx. 2 minutes, for approx. 30 minutes in the refrigerator
Peel apples, cut into eighths and store in lemon water (approx. 2l water + 1/2 lemon)
Beat the egg whites with about 70g sugar
Chop the apples in 2 portions in the TM31 (setting 5, 5 seconds) Alternative: grate
Mix all ingredients of the filling in a separate bowl
Take the dough out of the refrigerator, cut in half. Roll out one half on a baking sheet lined with baking paper and spread the filling.
Roll out the second half of the dough thinly and place on top of the filling.
Bake in the preheated base at 200 ° C (top / bottom heat) on the middle rack for approx. 35 min