Add onion, carrot and celery and cook, stirring, for 5 minutes or until soft. 2. 1. pie plate. Preheat oven to Gas 5/190 C/Fan 170 C. Put the mashed potato in a bowl, mix in onion and season. Heat oil in a large saucepan over medium-high heat. For filling, combine potatoes, onion, salt, pepper and parsley.

2. Stir in the sweetcorn, peas and half the cheese. Add lamb mince and cook, stirring to break up any lumps, for 5 minutes or until lamb changes colour. Add onion, carrot and celery and cook, stirring, for 5 minutes or until soft. Add lamb mince and cook, stirring to break up any lumps, for 5 minutes or until lamb changes colour. Place the mixture in a large ovenproof dish. 1. Heat oil in a large saucepan over medium-high heat. On a lightly floured surface, roll out one half to fit a 9-in. Spoon into crust; dot with butter.