Finely puree the dates with the egg, cinnamon, the pulp of the vanilla pod and the orange peel. Now quickly knead the flour with the chopped cold butter and the date puree with a food processor until a lump of dough forms.
Wrap the dough in foil and let it rest in the refrigerator for at least 2 hours.
Preheat the oven to 160 ° C top / bottom heat.
Roll out the dough about 3 mm thin on a floured surface and shape it into any shape. Place the biscuits on a baking sheet lined with baking paper and brush with beaten egg.
Bake the biscuits on the middle rack for 10 minutes.
The cookies in my photo are filled with an apricot jam with no sugar. To be found in my profile as apricot spread without sugar.