Cut the apricots into strips. Wash the raisins and dab dry. Chop the pistachios roughly. Put the flour in a bowl and make a depression in the middle. Crumble yeast in the middle and sprinkle with sugar.
Add lukewarm milk and quark and mix with some flour. Add dried fruit, salt and pistachios, work into a smooth dough with the dough hooks and cover for approx. 30 minutes.
Knead the dough on a floured work surface, quarter it and shape it into four small stollen. Place the stollen on a baking tray lined with baking paper. Whisk the egg yolk and 1 tablespoon of water and brush the stollen with it.
Bake in the preheated oven (electric oven: 200 °C/ gas: level 3) for 25-30 minutes. Cover the stollen after about 20 minutes. Dust with icing sugar while still hot.