Use the hand mixer and dough hook to make a smooth quark-oil dough from the ingredients up to and including the baking powder in the given order, then stir in the chocolate.
Place 8 flat cakes on a baking sheet with baking paper and bake in the preheated oven at 160-170 ° C fan oven on the middle rack. Approx. 15-20 minutes until the desired browning is achieved.