Mix all ingredients with a kitchen machine or by hand to produce a dough and leave in the fridge to chill for at least 2 hours. Roll out the dough on a floured surface and cut out biscuits using Christmas cutters. Arrange the biscuits on a tray lined with baking paper and then bake at 180°C for around 12-14 minutes until golden.
Melt the chocolate and oil together in a bain-marie. Then dip half of each biscuit in the chocolate, allow excess to drip off and then leave on baking paper to cool.