Chicken liver savouries

Preheat the oven to 180 ºC (350 ºF).
Heat the oil in a pan and sauté the onion until soft. Add the chicken livers and fry until browned on the outside but still slightly pink inside.
Transfer to a heated dish and keep warm.
Melt the butter or margarine in the pan. Add the cake flour and stir until smooth. Cook for one minute.
Remove from the heat and gradually stir in the milk. Stir until smooth and return to the heat.
Heat, stirring continuously, until the mixture comes to the boil. Remove from the heat and add cheese and parsley.
Spoon the chicken liver mixture into the readymade pastry shells and pour the white sauce over.
Sprinkle with dried breadcrumbs and bake for about 15 minutes until lightly browned.
Serve hot.