Defrost the raspberries. Put some aside for decoration. Soak the gelatine. Drain the papaya on a sieve. Puree the raspberries, papaya, icing sugar and 1 sachet of vanillin sugar.
Dissolve the gelatine in a small pot. Mix with 2 tablespoons of puree and fold into the remaining puree. Line a springform pan (18 cm Ø) with lady fingers and spread the puree on top. Chill for 1 hour. In the meantime beat the egg yolks, sugar and 1 packet of vanilla sugar with the whisks of the hand mixer until frothy. Gradually stir in the mascarpone and quark. Spread the mixture on the fruit puree and refrigerate for 1 hour. Halve the papaya and scrape out the seeds. Form balls from the fruit flesh with a ball cutter.
Gradually stir in the mascarpone and quark. Spread the mixture on the fruit puree and refrigerate for 1 hour. Halve the papaya and scrape out the seeds. Form balls from the fruit flesh with a ball cutter. Decorate the tartlets with papaya balls, raspberries and sugar crystals. Serve immediately