Take the puff pastry out of the fridge about 10 minutes before processing. Preheat oven (electric cooker: 200 °C/recirculating air: 175 °C/gas: see manufacturer).
Separate eggs. Cream egg yolk, sour cream, quark, sauce powder and sugar. Beat egg whites until stiff and fold into the mixture. Wash raspberries, dab dry.
Unroll doughs on floured surface. Cut out a total of 12 circles (12 cm Ø each), place the dough remains on top of each other (without kneading them) and roll out again. Place circles in twelve greased troughs of a muffin tray. Spread curd mixture in them. Press 1 raspberry in the middle of each. Bake in a hot oven for about 20 minutes. Leave to cool for about 10 minutes, remove the cakes from the trays. Let them cool down. Dust with icing sugar.