This elegant dish transforms simple manicotti into a restaurant-quality meal. The filling features smoked haddock poached gently in milk with bay leaves, creating a tender, smoky texture that is then enriched with heavy cream. Each tube is stuffed with this delicate fish mixture and arranged in a baking dish. It is then smothered in a velvety white sauce made from butter, flour, and the reserved poaching milk, finished with generous amounts of grated Cheddar cheese. Baked until bubbly and golden, the manicotti offers a comforting balance of creamy sauce, savory fish, and tender pasta. Perfect for a special weeknight dinner or a cozy weekend meal, this recipe brings a touch of Italian sophistication with British-inspired seafood flavors. It pairs beautifully with a crisp green salad or steamed vegetables.