Peel and quarter the apple and remove the core. Score the tops of the apples lengthways 3-4 times. Drizzle with lemon juice and cover.
Roughly grate the marzipan (I always cut it very small), beat with butter, 250 g sugar, salt and one point of vanilla sugar until creamy. Mix 6 eggs little by little. Mix in the flour, starch and baking powder.
Mix the quark with 3 eggs, 75g sugar, sauce powder and the other pt. Vanilla sugar.
Drain the apples. Spread the dough in a greased drip pan sprinkled with flour. Spread the poppy seed baking and quark mixture on it, tablespoon at a time. Put apples in.
Bake at 175 ° (fan oven 150 °) for about 45 minutes. Strain the jam through a sieve and brush onto the apples. Let cool down. Dust the cake with powdered sugar.