Traditional Welsh Anglesey Eggs (Potato, Leek & Egg Bake)

Mash boiled potatoes with butter and a little milk. Stir in sautéed leeks.

Spread the potato and leek mixture into an ovenproof dish.

Push halved hard-boiled eggs into the mash.

Cover generously with a thick cheese sauce (mornay).

Top with extra cheese and breadcrumbs, then bake at 200°C (400°F) until golden and bubbling.