125g of butter
55g of caster sugar, plus extra to finish
180g of plain flour
Pre-heat the oven to 190C.
Cut into rounds or fingers and place onto a baking tray. Sprinkle with caster sugar and chill in the fridge for 20 minutes.
Bake in the oven for 15-20 minutes, or until pale golden-brown. Set aside to cool on a wire rack.