Cut the vanilla pod lengthwise and scrape out the pulp. Put sugar, syrup, oil, plum puree, egg white, egg, vanilla pulp, oat flakes, oat bran, flour and baking powder into a mixing bowl. Finely dice the apricots and add.
Mix everything with the dough hooks of the hand mixer. For each cookie put about 1 teaspoon of dough on 3-4 baking trays lined with baking paper and press flat. In the preheated oven (electric cooker: 175 °C/ circulating air: 150 °C/ gas: level 2) set to 2.
Bake from the top for 12-15 minutes. Remove the tray and let the cookies cool on a cake rack. Bake the rest of the dough in the same way.