Preheat oven to 200°C/fan 180°C/gas mark 6.
Place butter, caster sugar and Fate low protein all-purpose mix into a mixing bowl.
Rub butter into the flour and sugar mixture until it binds together, slowly adding water whilst kneading to form a manageable dough.
Transfer to a surface lightly dusted with Fate low protein all-purpose mix, and continue to knead until smooth.
Roll dough to a thickness of ½ a centimeter, cut into 5-8 pieces (using Christmas cutters) and place onto a lightly greased baking tray.
Cook for 20-25 mins, until golden in colour.
Remove from oven and cool on wire rack for 30 minutes.
Decorate with icing and edible glitter then serve.
Add cinnamon and nutmeg to the dough mixture for a more Christmassy flavour boost.
Fate low protein all-purpose mix is a food for special medical purposes and must only be used under medical supervision