Peel, quarter, core and chop the apples. Stir 3 tablespoons apple juice and 2 tablespoons starch until smooth. Boil up the remaining apple juice, 3 tbsp. sugar and apple pieces in a pot. Stir in the starch, bring to the boil again and simmer for about 1 minute while stirring.
For the base, put flour, 150 g sugar, 1 pinch of salt, 1 egg and butter in flakes in a mixing bowl. Knead with the dough hooks of the hand mixer to a smooth dough. Put 1 third of the dough into a greased springform pan (26 cm Ø), dusted with flour and press to a smooth base. Press 1 further third in the form to a smooth rim. Put the form in a cold place. Knead the rest of the dough, approx. 1 tsp cinnamon, 4 tbsp sugar and 4 tbsp flour into crumbles
For the cheese mixture, mix quark, lemon juice, 100 g sugar and 4 tbsp. starch. Stir in 3 eggs one after the other. Put the cheese mixture into the mould. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) on the bottom shelf for approx. 35 minutes. Remove the cake, spread apple compote and crumbles on the cheese mixture. Bake the cake for another 30 minutes at the same temperature. Let it cool down on a cake rack. Remove the cake from the tin. Sprinkle with 1 tablespoon of sugar before serving
waiting time 2 hours