Boil 175 ml milk. Add the poppy seeds and cover and let it swell for about 20 minutes at very low heat. Cool down
Grease a spring plate (30 cm Ø). Or grease a stainless steel cake ring (30 cm Ø) and place it on a greased baking tray. Peel, halve and core apples. Sprinkle with 4 tbsp. lemon juice. Mix quark, oil, 5 tablespoons milk, 75 g sugar, vanillin sugar and salt. Mix flour and baking powder. Stir one half into the quark mixture, knead the other half in
Roll out 5/6 dough to a little flour round (approx. 36 cm Ø). Place in the spring tray or cake ring and press up 4-5 cm at the edge
Mix sour cream, poppy seed mixture, eggs, 100 g sugar and sauce powder. Pour onto the dough. Dab the apple halves dry and place them on the poppy seed mixture with the curvature upwards. Form 6-8 strands from the remaining dough and lay them on the apples in a grid pattern
Bake in the preheated oven (electric cooker: 200 °C / convection oven: 175 °C / gas: level 3) for about 40 minutes. If necessary, cover the cake with parchment paper after about 20 minutes. Cooling down
Mix icing sugar and 1 tablespoon lemon juice. Brush the dough rack with it and let it dry. Served with: whipped cream