Catch the juice of the cherries and bring to the boil with 2 tablespoons of cornstarch and cinnamon, remove from the stove and add the cherries.
Prepare a quark-oil dough from low-fat quark, milk, oil, 75 g sugar, baking powder and 300 g flour. Roll out the dough on the baking sheet. Place the cherries on the batter.
Make crumble from 150 g butter, 150 g sugar, vanilla sugar, 300g flour and 1 pinch of baking powder and sprinkle on the cherries.