Southern Oyster Casserole
Peer reviewed by UK recipe editorsAuthored by UK recipe editorsOriginally published 17 Jan 2026
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This classic Southern-style oyster casserole is a sophisticated, high-protein dish that brings a touch of coastal elegance to your dinner table. The recipe combines plump, succulent oysters with earthy mushrooms and crisp peppers, all enveloped in a velvet-smooth Parmesan cream sauce. A hint of nutmeg and paprika adds a delicate warmth, resulting in a deeply savoury flavour profile that celebrates the natural sweetness of the seafood.
Ideal for special occasions or a luxurious weekend supper, this comforting seafood bake is finished with a crisp, buttery breadcrumb topping that provides a wonderful textural contrast. You can easily prepare the base in advance, making it a stress-free option for hosting. Serve this rich gratin alongside a crisp green salad and some crusty bread to soak up the decadent, creamy sauce.
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Ingredients for Southern Oyster Casserole
1.9L oysters
110g (1 stick) butter
3 whole spring onions, chopped
1 green or red pepper, seeded, deribbed, and chopped
230g mushrooms, sliced
60ml flour
240ml double cream
60ml grated imported Parmesan cheese
Freshly grated nutmeg
1/2 teaspoons paprika
Sel
Freshly ground black pepper
120ml bread crumbs
How to make Southern Oyster Casserole
Preheat the grill. Grease a 9x13-inch ovenproof serving dish or spray it with nonstick spray.
Drain the oysters and set aside. Melt 2 tablespoons of the butter in a heavy casserole. Add the spring onions and pepper and sauté until the onion is soft, about 5 minutes. Add the mushrooms and oysters and sauté for 5 minutes. In a separate pan, melt 2 tablespoons of the remaining butter. Stir in the flour. When smooth, add the cream, and stir until boiling and thick. Add the cheese. Stir this cheese sauce into the oyster mixture and season with nutmeg, paprika, salt, and pepper. The casserole may be made ahead to this point and refrigerated overnight. Return it to the simmer on top of the stove before proceeding.
Pour the mixture into the prepared dish and top with the bread crumbs and dot with the remaining butter. Place under the grill until browned and bubbling—about 10 minutes, depending on the depth of the casserole.
Clause de non-responsabilité
While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.
Historique de l'article
Les informations contenues dans cette page ont été évaluées par des cliniciens qualifiés.
17 janvier 2026 | Publié à l'origine
Auteur: :
UK recipe editors
Examiné par des pairs
UK recipe editors

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