For the quark oil dough, mix 300 g flour, baking powder, 60 g sugar and salt. Add milk, oil, egg yolk and quark. Mix the ingredients with the dough hooks of the hand mixer to a smooth dough
Roll out the dough on the floured work surface to the size of the fat pan, grease the fat pan of the oven (approx. 32 x 39 cm), place the dough inside and pull it up along the edge
Peel and core the pears, cut them into narrow slices and place them in rows on the dough. Wash fresh cranberries, drain on kitchen paper and sort out. Spread the cranberries between the pear wedges
For the crumbles, mix 120 g flour, 50 g sugar, vanillin sugar and hazelnut kernels in a bowl. Add butter in small pieces and 1 tablespoon of water, knead into crumbles with your hands. Spread crumbles on the fruit. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for approx. 30 minutes
Serve the cake hot or cold as desired. Whipped cream tastes good with it