For the base, place flour, 100 g sugar, salt, 1 packet of vanilla sugar, 1 egg and 100 g butter in flakes in a mixing bowl, knead into a smooth dough with the dough hooks of the hand mixer. Roll out to a circle (26 cm Ø) on a floured work surface. Pour onto the bottom of a greased springform pan (26 cm Ø). Prick several times with a fork and chill for about 30 minutes
Dice the apricots and sprinkle with apple juice. Leave to stand for about 10 minutes. Then put them into a small pot and let them boil up briefly while turning. Remove from the heat, pour into a sieve, drain well and let cool off
Cream 100 g butter, 1 packet of vanillin sugar and 150 g sugar with the whisks of the hand mixer. Add 4 eggs one after the other and stir in. Add quark and stir in. Sift the pudding powder on top and stir well. Fold in apricots
Pour the quark mixture onto the short pastry, smooth it down and bake in the preheated oven (electric range: 175 °C/ convection oven: 150 °C/ gas: level 2) for approx. 65 minutes on the bottom shelf. Remove from the oven, place on a cake rack and allow to cool in the tin. Remove from the mould and dust the rim with icing sugar as desired
Waiting time approx. 15 minutes