For the topping peel the quinces, cut out the core and cut the flesh into slices. Heat the fat in a pot and fry the quince slices and honey in it. Cover and cook over a low heat for 15-20 minutes.
If necessary, drain the quinces on a sieve. For the quark oil dough, mix all ingredients with the dough hooks of the hand mixer to a smooth dough. Roll out the dough on a greased and floured baking tray.
For the crumbles, mix flour, sugar and a little cinnamon. Put butter in a pot, let it foam up and stir it hot into the flour. Stir until a crumbly mixture is formed. Spread the quinces on the quark oil dough.
Sprinkle ginger powder over the fruit. Add crumbles and bake in the preheated oven (electric: 200 ° C / gas: level 3) for 20-30 minutes. Dust with icing sugar and cinnamon. Results in about 20 pieces.