Ready for a picnic? These Scottish Shortbread biscuits are mouth-wateringly good and perfect for tipping in tea. Ingredients 2 cups butter, softened 1 cup packed brown sugar 4 to 4-1/2 cups all-purpose flour How-to 1. Preheat the oven to 160°C. 2. Cream butter and brown sugar until light and fluffy, 5-7 minutes. 3. Add 3-3/4 cups flour and mix well. 4. On a floured surface, knead for 5 minutes. 5. Roll dough into a rectangle, transfer to a baking sheet and cut into small strips. 6. Prick each co