Preparation time: Drain the apricots on a sieve. Cream fat, sugar, vanillin sugar. Stir in the eggs one after the other. Add sour cream. Mix flour and baking powder and stir in.
Fill the dough into a greased springform pan (26 cm Ø) and smooth it down. Spread the apricots on the dough, press them a little bit into the dough. Bake the cake in a preheated oven (electric: 175 °C/ gas: level 2) for 50-60 minutes.
Take out the cake, let it cool down a little. Remove the cake from the edge and let it cool down. Heat up the apricot jam and spread on the apricots. Sprinkle with sugar crystals.