Drain the apricots. Mix the poppy seed filling, except for 2 tablespoons, eggs and 4 tablespoons of quark. For the crumbles, heat butter in a saucepan. Mix 100 g flour, 80 g sugar and 2 tablespoons of poppy seed filling in a bowl.
Add hot butter all at once and knead to a crumbly dough. For the base mix 150 g flour, baking powder, 50 g sugar, salt and vanillin sugar. Add 75 g quark, oil and milk. Knead to a smooth dough with the dough hooks of the hand mixer.
Knead again with your hands briefly. Roll out the dough into a circle (28 cm Ø) on the floured work surface. Grease a springform pan (26 cm Ø) and sprinkle with flour. Put the dough into the tin with the help of the cake roll, spread poppy seed mixture alternately with the apricots evenly on top.
Sprinkle with sprinkles. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: stage 2) for approx. 35 minutes.