Put flour, sugar, vanillin sugar and 200 g butter in a mixing bowl. Warm the milk lukewarm. Crumble yeast into it and dissolve while stirring. Add the yeast milk to the flour mixture and knead everything into a smooth dough with the dough hooks of the hand mixer.
Cover and leave to rise in a warm place for about 50 minutes. Meanwhile grate 150 g marzipan. Roughly chop the pistachios. Dice the apricots. Mix marzipan, almonds, apricots and pistachios. Knead the dough again and roll out to a square (30 x 30 cm) on a floured work surface.
Spread the marzipan mixture evenly on top. Roll up the dough and form into a stollen. Place the Stollen on a baking tray (32 x 39 cm) lined with baking paper, cover and let them rise again for about 30 minutes.
Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for approx. 70 minutes. Melt 150 g butter. Remove the stollen from the oven and place on a grid. Immediately spread some of the melted butter on the stollen and dust with icing sugar.
Repeat the process until butter and icing sugar are used up. To decorate, roll out 50 g marzipan on some icing sugar and cut out stars. Dust with cocoa and decorate the stollen with the stars.