Knead the flour, 125 g sugar, vanillin sugar, salt, cocoa, 1 tablespoon cold water, 1 egg and butter in pieces, first with the dough hooks of the hand mixer, then with your hands to a smooth dough. Cover and chill for about 30 minutes. Peel, core and quarter apples. Cut the apples slightly several times with a knife. Drizzle with lemon juice.
Mix sour cream, cream, 75 g sugar, pudding powder and 2 eggs. Roll out the dough on a little flour until round (approx. 32 cm Ø). Put it into a greased springform pan (26 cm Ø) and press on the edge. Pour in the icing. Put apples on top. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for about 1 hour. Remove the cake and let it cool down a little. Heat up the jelly and coat the still hot cake with it. Let it cool down.
Put apples on top. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for about 1 hour. Remove the cake and let it cool down a little. Heat up the jelly and coat the still hot cake with it. Let it cool down. Dust the rim with icing sugar
waiting time approx. 2 hours