Easy Christmas Cookies – Vanilla Thins Ingredients   325g plain flour 200g chilled salted butter 125g golden caster sugar 2 tsp vanilla extract 2 large free range egg yolks Icing Sugar (For Dusting)   Method With your hands, roll the dough on a lightly floured surface into a sausage shape about 25cm long and 5cm in diameter. Wrap the dough ...