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Golden Chilean Sea Bass with Buttery Citrus Finish

Golden, buttery, and effortlessly elegant, this Chilean Sea Bass showcases everything that makes this prized fish so special. Crisp on the outside, succulent and flaky within, it’s paired with a luxurious citrus butter sauce that elevates every bite. Best of all, it’s on the table in just 15 minutes.

Recipe by Flora Ashbury  ·  Published
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◷Prep5 mins
♨Cook10 mins
◷Total15 mins
Serves4
♨Energy415 kcal

The recipe

Method

  1. Prepare the Sea Bass - Pat the Chilean sea bass fillets dry with kitchen paper, then season generously on both sides with the sea salt and freshly ground black pepper.
  2. Create the Perfect Sear - Heat 20g butter and 20ml olive oil in a large frying pan over a medium-high heat until the butter is foaming. Carefully place the fillets in the pan, skin-side down.
  3. Cook Until Golden - Sear the sea bass for 3-4 minutes per side, depending on the thickness of the fillets, until beautifully golden and crisp. If the fish resists when you attempt to turn it, allow it to cook for another 10-15 seconds before trying again. The fish is ready when it flakes effortlessly with a fork and reaches an internal temperature of 60-63°C.
  4. Make the Citrus Butter Sauce - While the fish cooks, melt 60g unsalted butter in a small saucepan over a medium-low heat. Continue cooking until lightly golden and fragrant, then whisk in the fresh lemon juice, salt, and black pepper until smooth and glossy.
  5. Serve and Enjoy - Transfer the sea bass to warmed plates and generously spoon over the warm citrus butter sauce. Serve immediately with seasonal vegetables, buttery mashed potatoes, or a crisp green salad for an elegant restaurant-style meal.

A few details make all the difference

01

Pat the Fish Completely Dry

Why it matters: Moisture is the enemy of crispy skin. Thoroughly patting the fillets dry before seasoning helps create that beautiful golden crust while keeping the flesh moist and flaky.

02

Don't Move the Fish Too Soon

Why it matters: Let the sea bass cook undisturbed for the first few minutes. When the skin has properly crisped, it will naturally release from the pan without sticking.

03

Brown the Butter for Extra Flavour

Why it matters: Allowing the butter to turn lightly golden before adding the lemon juice creates a rich, nutty depth that transforms a simple sauce into something restaurant-worthy.

Why this recipe works

Elegant, luxurious and surprisingly easy to prepare, this Golden Chilean Sea Bass transforms a handful of ingredients into a truly memorable meal. The fish is expertly seared until beautifully golden, while the delicate flesh remains tender, moist and flaky beneath its crisp exterior. Finished with a velvety lemon butter sauce, it's a restaurant-worthy centrepiece that's ready in just 15 minutes and delivers maximum flavour with minimal effort

Cook’s notes

Crispy skin

For exceptionally crisp skin, leave the fillets undisturbed for the first few minutes of cooking. This allows the skin to render and develop that irresistible golden crunch while maintaining the fish's delicate, buttery texture.

Make Ahead

Want to get ahead? The citrus butter sauce can be prepared up to 3 days in advance and stored in an airtight container in the refrigerator. Simply warm it gently before serving for a quick, restaurant-quality finish.

Storing Leftovers

Allow the sea bass to cool completely before transferring to an airtight container. Store in the refrigerator for up to 3 days. For the best texture, keep the fish and sauce separate if possible.

Freezing

Chilean sea bass freezes beautifully when stored without the sauce. Once cooled, place the cooked fillets in a freezer-safe container or bag, removing as much air as possible. Freeze for up to 2 months. Defrost overnight in the refrigerator before reheating.

Reheating

To keep the fish moist and flaky, reheat gently in a covered frying pan over a medium-low heat with a small splash of water. Avoid microwaving, as it can dry out the delicate flesh.

Best Substitutes for Chilean Sea Bass

If Chilean sea bass isn't available, several alternatives offer a similarly rich, buttery texture: Black Cod (Sablefish) – The closest substitute, with a luxurious texture and high oil content. Sea Bass Fillets – Mild, delicate, and perfect for pan-searing. Haddock – Slightly firmer but still tender and flaky. Halibut – Meaty, elegant, and ideal for special occasions. Cod – Readily available and beautifully paired with citrus butter sauce. Tilapia – A budget-friendly option with a mild flavour that works well with the rich sauce.

Build the perfect bowl

  • Fresh sea bass
  • Citrus butter sauce
  • Lemon and black pepper

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Cooking mode

Golden Chilean Sea Bass with Buttery Citrus Finish

Prepare the Sea Bass - Pat the Chilean sea bass fillets dry with kitchen paper, then season generously on both sides with the sea salt and freshly ground black pepper.
Create the Perfect Sear - Heat 20g butter and 20ml olive oil in a large frying pan over a medium-high heat until the butter is foaming. Carefully place the fillets in the pan, skin-side down.
Cook Until Golden - Sear the sea bass for 3-4 minutes per side, depending on the thickness of the fillets, until beautifully golden and crisp. If the fish resists when you attempt to turn it, allow it to cook for another 10-15 seconds before trying again. The fish is ready when it flakes effortlessly with a fork and reaches an internal temperature of 60-63°C.
Make the Citrus Butter Sauce - While the fish cooks, melt 60g unsalted butter in a small saucepan over a medium-low heat. Continue cooking until lightly golden and fragrant, then whisk in the fresh lemon juice, salt, and black pepper until smooth and glossy.
Serve and Enjoy - Transfer the sea bass to warmed plates and generously spoon over the warm citrus butter sauce. Serve immediately with seasonal vegetables, buttery mashed potatoes, or a crisp green salad for an elegant restaurant-style meal.
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