Warm the milk lukewarm. Put 250 g flour, 35 g sugar and salt in a bowl. Press a depression in the middle. Mix yeast and 5 tablespoons of milk and put it into the flour bowl. Mix with some flour from the edge. Cover and leave to rise in a warm place for about 15 minutes
Melt 125 g butter and let it cool down a little. Mix 150 g flour, grated coconut, vanillin sugar and 75 g sugar. Stir in liquid butter with the dough hooks of the hand mixer and knead into crumbles. Put the crumbles in a cool place
Add 40 g butter, egg and remaining milk to the yeast dough and knead with the dough hooks of the hand mixer to a smooth dough. Cover the dough again and let it rise for about 30 minutes
Wash the apricots, grate them dry, halve and stone them. Knead the dough briefly on a floured work surface, then roll out to a flat cake (3-4 mm thin). Place the flat cake on a baking tray lined with baking paper. Cover with 35 g butter flakes. Spread the apricots and jam on top, leaving an approx. 1 cm wide edge. Spread crumbles on top. Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for 20-25 minutes. Remove the crumble cake from the oven and let it cool down on a cake rack. Serve lukewarm or cold. Dust with icing sugar
waiting time approx. 1 1/2 hours