Line a large sieve with 2 layers of kitchen paper, place bowl underneath. Pour in all the curd, drain in the fridge for about 3 hours. Wash, halve and stone the apricots
Grease a springform pan (26 cm Ø; approx. 8 cm high). Beat the eggs, sugar, vanillin sugar and 1 pinch of salt for about 5 minutes until foamy. Stir in quark, lemon juice and pudding powder. fold in 50 g Amarettini
Spread 1/3 of the quark mixture into the mould. Spread the apricots, except for 3 halves, on top. Spread the rest of the quark mixture on top. Bake in the preheated oven (electric cooker: 175 °C/circulating air: 150 °C/gas: level 2) for about 1 hour. Leave in the oven with the door open for approx. 15 minutes
Use a knife to remove the cake from the edge of the mould. Cool down in the mould. Cut the rest of the apricots into slices. Decorate the cake with 3 tbsp. amarettini, sliced apricots, sugar crystals and icing sugar