Warm the fat and milk in a pot lukewarm. Mix the flour with the yeast in a mixing bowl. Add 30 g sugar, vanillin sugar and salt to the milk-fat mixture. Mix everything with the dough hooks of the hand mixer for a short time at lowest, then at highest speed for 2-3 minutes to a smooth dough. Cover the dough and let it rise in a warm place for about 20 minutes.
Squeeze lemon. Wash apples and cut into thin slices. Sprinkle slices with 2 tablespoons of lemon juice. Knead the dough on a lightly floured work surface and roll out to a round plate (approx. 30 cm Ø). Grease a dish (23 cm Ø) and dust with flour. Put the dough into the form, press the edges slightly. Spread apple slices on the bottom. Mix sour cream, eggs, starch, 2 tablespoons sugar and 2 tablespoons lemon juice well. Pour the glaze over the apples and bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for 35-45 minutes. Remove the cake and let it cool down lukewarm.
Put the dough into the form, press the edges slightly. Spread apple slices on the bottom. Mix sour cream, eggs, starch, 2 tablespoons sugar and 2 tablespoons lemon juice well. Pour the glaze over the apples and bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for 35-45 minutes. Remove the cake and let it cool down lukewarm. Before serving, spread the cranberries on the cake and dust with icing sugar. Serve lukewarm or cold