Instructions

Preheat oven to 160C/140C fan-forced.
Line two baking trays with non-stick baking paper.
Using an electric beater, beat the butter, sugar and vanilla until light and creamy.
Sift in the flours and mix together with a non-serrated knife until evenly mixed.
Gather the dough together and divide into two equal portions.
Place each portion on a prepared tray and flatten out to a 20cm round.
Pinch the edges to decorate and score into 8 wedges. Sprinkle with extra caster sugar and bake for 35 minutes or until pale golden.
Stand on tray for 5 minutes, then transfer to a wire rack to cool.
Break into wedges to serve.
Store in an airtight container for up to a week.
NOTES