Cut the vanilla pod in half and scrape out the seeds. Mix the vanilla seeds, margarine, sugar and vanilla sugar thoroughly in a bowl using a hand mixer, then add the soya drink.

Add the flour, cornflour and baking powder and mix well with a spatula. Finally, stir in the chocolate cubes.

Roll out the dough on a floured surface to a thickness of about 1 cm and cut out cookies using a round cookie cutter (7 cm in diameter). Place these on a baking tray lined with baking paper and bake in the oven at 180 degrees (fan) for about 20 minutes.