Knead flour, 80 g sugar, orange peel, salt, fat in pieces and 1 egg smooth. Chill the short pastry for about 30 minutes
Grease a tart mould with removable base or a springform pan (28 cm Ø) and dust with flour. Roll out the dough on a little flour and make it round (32 cm Ø). Place in the tin and press down on the edge
Drain plums well. Mix quark, 3 eggs, 50 g sugar and vanillin sugar. Spread the pastry base with plum puree. Spread plums on top. Pour the quark mixture over it. Bake in the hot oven (electric cooker: 200 °C / convection oven: 175 °C / gas: level 3) on the bottom shelf for 50-60 minutes
Sprinkle the tart with almonds and bake at the same temperature for another 20 minutes. Let it cool down. Dust with icing sugar