For the crumbles, knead 50 g butter 4 tablespoons sugar and almonds. Select, wash and clean the berries. Strip currants from the panicles. For the dough mix flour and baking powder. Whisk the eggs.
Stir in 200 g sugar, vanillin sugar, 200 g butter and yoghurt. Quickly stir in the flour mixture.
Pour the dough into a greased and floured baking tray and smooth it down. Spread the berries on the dough. Bake in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: see manufacturer) for approx. 25 minutes.
About 5 minutes before the end of the baking time, spread crumbles on the cake and bake until done. Take the cake out of the oven, let it cool down and cut it into pieces.