Take the puff pastry out of the fridge about 10 minutes before processing and put it aside. Roughly chop the nuts. Mix with cranberries and honey. Stir crème fraiche until smooth. Roll out the dough and cut into 6 rectangles (approx. 12 x 14 cm). Cut diagonally into each corner about 5 cm deep, leaving the middle free. Place on 2 baking cups lined with baking paper
Put a blob of crème fraîche in the middle of each piece of dough. Spread the nut mixture over it. Fold each corner towards the middle over the filling. Whisk the egg and brush the dough with it. Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas mark 3) one after the other for about 15 minutes. Let cool and serve dusted with icing sugar