The method
- Peel and boil the potatoes till cooked, mash and set aside.
- Preheat the oven to 180c. Finely chop the onion and leek. Heat the butter and oil in a pan and fry the vegetables for a few minutes till soft. Set aside.
- Melt the 50g butter in a saucepan, add the flour and cook for a couple of minutes. Add the milk gradually on a low heat, whisk or stir till it starts to thicken. Season.
- Combine the sauce, onion and leek, the fish and the frozen peas in the pan with a large handful of flat leaf parsley.
- Pour into a buttered oven dish. Top with mashed potato and grated cheddar.
- Bake for 40 minutes or till golden on top.
- Serve with seasonal veg.
