Preheat oven to 150ºC.
In a food processor, combine butter, sweetener, vanilla, flours and cinnamon until the mixture resembles fine breadcrumbs.
Press mixture together to form a dough. Roll out between two sheets of baking paper till about half a centimetre thick.
Cut out desired shapes and placed on a tray lined with baking paper. Bake cookies for 30 minutes until dry, but still light in colour.