Drain the plums in a sieve, collecting the juice. Measure 100 ml of juice. Boil up juice, cinnamon stick, star anise, 30 g sugar and red wine. Stir starch with a little water until smooth, bind juice with it.
Bring to the boil again. Stir in plums and let cool. Put flour, baking powder, 50 g sugar, vanilla sugar, cinnamon, salt, egg yolk and butter in flakes in a mixing bowl. Work into crumbles with your hands.
Remove cinnamon stick and star anise. Put the plum compote into 4 small greased ovenproof dishes (approx. 100 ml content). Spread crumbles on top. Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for about 30 minutes.
Remove the plum crumble and dust with icing sugar. Cream tastes good with it.