Put all the ingredients in a bowl and work the mixture with your hands until you have a smooth, pliable dough. Depending on the type of flour you use, you may have to add a little more to absorb any excess moisture.
The dough is ready to use when it no longer sticks to your hands. Cover the bowl with cling film and leave to rest for a couple of hours.
Turn the dough out onto a floured work surface and, using a rolling pin, roll it to a thickness of around 1 cm. Choose some Christmas-themed cookie cutters and get cutting!
Arrange the shortbreads on an oven tray and bake in a pre-heated oven at 180ºC for 25 minutes.
Once cooked and before they get cold, cover them in caster sugar.
Alternatively you can sprinkle them with icing sugar and cocoa powder.
This is a really delicious treat that will really top off your celebratory lunch or dinner this Christmas.