Preheat the oven to 220 degrees celcius. Sift the flour, sugar and salt into a large bowl. Grate in the cold butter and mix through with a knife. Turn out onto a floured board and using a gentle touch, form into a rectangle shape approximately 2.5cm thick. Spread with desired topping. Roll as you would for pinwheel scones and slice. Place on baking paper. Cook for 10-12 minutes.
IDEAS FOR TOPPINGS: