Hallowen is an Anglo-Saxon event that has literally depopulated also in Italy. Involving children in the preparation of "scary" looking sweets is an opportunity to spend good time together.
Melt the butter in a bain-marie. Sieve and mix together the two types of flour with one teaspoon of powder yeast.
Make a well on the work surface with the flour and in the centre place the softened butter, sugar, yolks, vanilla flavouring and a pinch of salt.
Combine together quickly, adding the grated lemon rind and the pine nuts ( keep some to one side). Roll out the dough to a thickness of approx. 6 mm, then cut out the cakes with a biscuit cutter.
Place on an oven tray and decorate the centre with the remaining pine nuts. Place in the oven at 180° for around 15 minutes. Remove and leave to cool. In the meantime, using the bain-marie, melt the chopped chocolate, dip the sweets in part one by one and leave them to dry on a cake rack.