Filling: Chop the cranberries very finely and mix with the other ingredients.
Dough: Sieve the flour into a bowl and add the rest of the ingredients, except for the cocoa. Process everything with the mixer first on the lowest, then on the highest level to form a dough.
Halve the dough, knead the cocoa under one half.
Roll out the light and dark dough separately on a lightly floured work surface into a rectangle of 20 x 10 cm.
Place the light dough on the dark dough, press it down and carefully roll it out into a rectangle of 40 x 20 cm. Spread the cranberrie chocolate mixture on the dough. Halve the rectangle so that there are 2 rectangles of 40 x 10 cm, roll up these rectangles tightly from the long side and place in the refrigerator for an hour.
Preheat oven: top / bottom heat 200 ° C, hot air 180 ° C
Cut the rolls evenly into 1 cm thick slices, place on the baking sheet (lined with baking paper) and bake for 10 minutes.