Cod and Potato Casserole with Mustard

Method

• Set the oven to 200 °C.
• Cut the cod fillet, carrot, celeriac, and leek into cubes.
• Peel the potato, halve it, and cook until tender.
• Bring salted water to a boil, add the carrot and celeriac, and let boil for a couple of minutes.
• Add the leek, let it cook for about 20 seconds, then drain the cooking water.
• Drain the potatoes and roughly mash them with Dijon mustard.
• Add the vegetables and eggs to the mashed potatoes, and stir gently so the egg doesn't coagulate.
• Season the potato mixture with salt and pepper, and let it cool slightly.
• Melt butter in a frying pan and stir in breadcrumbs.
• Gently fold the cod into the potato mixture and transfer to a greased ovenproof dish.
• Sprinkle butter and breadcrumbs over the dish and bake in the oven for about 25 minutes.
• Serve garnished with chopped chives.