2.To make the filling; heat oil in saucepan over medium-high heat. Add curry paste and green onions; cook, stirring, for 3 minutes. Add coconut milk reserving 2 teaspoon for brushing pastry later. Bring to the boil and cook for 5 minutes until reduced and thickened slightly.
3.Combine stock and cornflour. Add to pan and stir until thickened. Add vegetables and coriander, return to boil and remove from heat.
4.To bake the pie, place filling in baking or pie dish and top with pastry. Brush pastry with remaining coconut milk. Bake for 25 to 30 minutes until pastry is puffed and golden. Serve.