Preheat the oven to 180°C. Line a baking sheet with baking paper and grease with non-stick spray.
1 PHYLLO PASTRY Brush butter on a sheet of phyllo pastry. Put another sheet on top and brush with butter. Add the last sheet and brush once again with butter. Sprinkle the castor sugar over.
2 Cut the pastry into rectangles of about 15x10cm. Arrange the pastry rectangles on the baking sheet and bake for 7-10 minutes or until golden brown and crispy. Remove from oven and leave to cool completely.