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Fish Fillets with Olives and Oregano

This Mediterranean-inspired fish with olives and oregano is a bright and flavourful way to enjoy fresh white fish. By searing the fillets in a frying pan before roasting, you lock in the juices and achieve a beautiful golden colour that contrasts perfectly with the zesty lemon and salty picholine olives. It is a sophisticated yet simple dish that relies on high-quality ingredients to create a light, savoury sauce that feels indulgent without being heavy.

As a diabetes-friendly main course, this recipe is naturally low in carbohydrates and rich in heart-healthy fats from the extra-virgin olive oil. Halibut or cod work particularly well here, providing a meaty texture that stands up to the acidity of the white wine and citrus. Serve it alongside steamed seasonal greens or a crisp salad for a nutritious, balanced meal that is quick enough for a weeknight but elegant enough for guests.

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Ingredients for Fish Fillets with Olives and Oregano

  • 4 (1 1/4-inch-thick) pieces white-fleshed skinless fish fillets, such as halibut (170g each)

  • 1 teaspoon salt

  • 1/4 teaspoons black pepper

  • 45ml extra-virgin olive oil

  • 4 very thin lemon slices

  • 120ml dry white wine

  • 80ml pitted brine-cured green olives such as picholine, halved lengthwise (60g)

  • 1 to 1 1/2 teaspoons fresh lemon juice

  • 2 tablespoons finely chopped fresh oregano or 3/4 teaspoons dried oregano, crumbled

  • a 2 1/2-qt shallow ceramic or glass baking dish

How to make Fish Fillets with Olives and Oregano

Put oven rack in upper third of oven and preheat oven to 232°C.

Pat fish dry and sprinkle with salt and pepper. Heat 1 tablespoon oil in a 12-inch heavy skillet over moderately high heat until hot but not smoking, then sear fillets, skinned sides down, until browned well, 3 to 4 minutes. Transfer, seared sides up, to baking dish (reserve skillet), then top each fillet with a slice of lemon.

Add wine to skillet and bring to a boil, scraping up any brown bits. Boil 30 seconds, then pour around fish. Scatter olives around fish and bake, uncovered, until fish is just cooked through, 8 to 12 minutes.

Transfer fish to a platter, then whisk lemon juice, oregano, and remaining 2 tablespoons oil into cooking liquid in baking dish. Season sauce with salt and pepper and spoon over fish.

Descargo de responsabilidad

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.

Historia del artículo

La información de esta página ha sido revisada por médicos cualificados.

  • 17 Enero 2026 | Publicado originalmente

    Autores:

    Editores de recetas del Reino Unido

    Revisado por expertos

    Editores de recetas del Reino Unido
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