Heat the butter (150 g) together with the sugar (150 g) in a saucepan (until the butter has melted), stir well several times, and allow to cool slightly.
Put egg yolks (3 pcs.) and flour (300 g. ) in a mixing bowl; Mix briefly with the blender. Add the butter-sugar mixture (and vanilla flavoring if needed) and mix with the mixer just until a crumbly dough is formed. Put 3/4 of the crumbs in a greased springform pan and press into a dough base with a spoon.
Spread the halved plums (550g.) close together (should not overlap) on the pastry base and cover with the remaining crumbles. possibly Sprinkle some sugar over the plums before they crumble if they are a bit sour. Bake at 180 degrees for 45-50 minutes. If necessary (in good time) cover the cake with aluminum foil if the crumbles are getting too brown.
Enjoy your meal!
