Cod au gratin

Instructions

1. Preheat the oven to 200°C.
2. In a saucepan, bring the milk to a simmer with the halved onion and bay leaves, then leave to infuse off the heat for 10 minutes.
3. Meanwhile, place the cod fillets in a buttered dish, cover them with half of the infused milk, then bake at 180°C for 10 minutes, until the flesh flakes easily.
4. Drain the fish, reserving the cooking liquid, and roughly flake it, removing any bones.
5. Melt the butter, add the flour and cook for 1 minute, then gradually whisk in the strained milk and the cooking liquid to make a smooth white sauce.
6. Season with salt, pepper and nutmeg, then stir in half of the cheddar.
7. Spread the flaked fish in a gratin dish, coat with the sauce, and sprinkle with breadcrumbs, the rest of the cheddar and parsley.
8. Bake for 15 to 20 minutes, until the surface is golden and bubbling. Serve hot with potatoes.