Knead the first 6 ingredients into a dough. Grease and flour a 28 springform pan well, press 2/3 of the dough (save 1/3 for the crumble) into the tin, form an approx. 2 cm high rim and refrigerate for 1 hour.
Then mix the ingredients for the filling and pour into the mold, smooth out. Place the streusel on the quark mixture and bake in the preheated oven (at 150 ° C convection or 170 top / bottom heat) for about 50 - 60 minutes.