1.Preheat oven to 180°C (160°C fan forced). Line oven trays with baking paper. Make 1 quantity basic shortbread dough,
2.Process butter, flours and icing sugar until mixture forms a ball. Knead gently on floured surface until smooth. add golden syrup or treacle. Stir peanut butter into dough. Spoon mixture into piping bag fitted with a 2cm (¾-inch) fluted tube, pipe 5cm (2-inch) stars about 2.5cm (1 inch) apart onto trays.
3.Bake about 10 minutes, cool on trays.
Store swirls in an airtight container for up to a week.Note