Preheat the oven to 180 °C. Place the flour, butter and sugar in a bowl and mix to breadcrumbs with your fingertips. Add the candied peel, then combine to make a ball of dough.
Sprinkle a little sugar on the work surface, roll out the dough and cut into Christmas shapes such as stars or trees. Make a hole in each biscuit. Bake for 15 minutes, remove from the oven and cool. You can thread ribbon through the holes and hang the biscuits on your Christmas tree.
