Shortbread biscuits

Preheat the oven to 160°C/gas mark 3

Cream together the butter and sugar in a large mixing bowl. Gently incorporate the flours until smooth, then break the dough into 4 pieces. Roll out into 5cm long logs, wrap in cling film and place in the fridge to set for at least 2 hours

When nice and firm, remove the cling film from the logs and slice into 5mm thick discs. Lay the biscuits out onto a baking tray, then place in the oven for around 8 minutes, until nicely golden brown

Remove from the oven, sprinkle with sugar and place on a wire rack to cool