Sift the flour with baking powder. Add the sugar. RUB the butter and grind into crumbs.
Add the egg and sour cream and knead the dough. Put it in a bag and put it in the refrigerator for 30 minutes.
Add the egg, sugar, and vanilla sugar to the curd and grind with a blender.
Roll out the dough.
Cover the baking dish with parchment and transfer the dough.
Spread the filling and turn the edges of the dough.
Bake for about 30 minutes at 180 degrees.
The finished pie is cooled and cut.