Preheat the oven to 180 degrees.
Form your dough into a roll, cover with cling wrap and place in the freezer for about 20 mins. Once it's chilled slice into rounds and arrange on a tray covered in baking paper. If you forget it (as we pretty much always do) and it freezes into a solid doughy log, don't panic. Although it will be harder to cut into rounds it will still taste just as good.
Bake for about 20 minutes but start checking them after 15 because ovens are sneaky beasts and generally can't be trusted.