Mouthwatering Chilean Sea Bass Recipe: Perfect for Your Keto Diet Plan

Keto Lemon Butter Chilean Sea Bass: A Luxurious Low-Carb Delight

Welcome to a culinary journey where the sumptuous flavors of the sea meet the principles of keto nutrition. The Keto Lemon Butter Chilean Sea Bass is not just a dish; it’s an experience that tantalizes your taste buds while keeping your carb count low. This recipe is a testament to the fact that a ketogenic diet can be both indulgent and healthy, offering a perfect blend of high-quality fats and lean protein.

Chilean Sea Bass, known for its buttery texture and rich flavor, serves as the ideal canvas for the bright and zesty lemon butter sauce. This dish is a celebration of simplicity and elegance, making it a superb choice for a keto-friendly dinner that impresses without the stress. Let’s dive into the flavors of the ocean with a recipe that’s as nutritious as it is delicious.

Keto Lemon Butter Chilean Sea Bass

The Essence of Keto Cooking with Chilean Sea Bass

Originating from the deep, cold waters of the Southern Hemisphere, Chilean Sea Bass is a premium fish that’s not only delectable but also incredibly rich in Omega-3 fatty acids. These essential fats are a cornerstone of the ketogenic diet, known for their anti-inflammatory properties and ability to support heart and brain health.

When paired with the monounsaturated fats from extra virgin olive oil and the saturated fats from unsalted butter, this dish becomes a powerhouse of healthy fats. This aligns perfectly with the keto diet’s focus on high-fat, low-carb foods to promote ketosis, where the body efficiently burns fat for energy.

The addition of fresh herbs like parsley and thyme not only enhances the flavor profile but also contributes valuable antioxidants to the dish. The lemon juice and zest add a refreshing tang and are also great for digestion. With minimal carbs in the form of garlic and lemon, this dish keeps your macros in check while providing an unforgettable dining experience.

Preparing Keto Lemon Butter Chilean Sea Bass

Mastering the Method for Perfect Chilean Sea Bass

Preparing this Keto Lemon Butter Chilean Sea Bass requires a touch of finesse to ensure the fish is cooked to perfection. The key is to start with a hot skillet to achieve that desirable crispy skin without overcooking the delicate flesh. Patience is crucial; let the fish sear undisturbed to develop that beautiful crust.

When flipping the fillets, use a thin spatula and be gentle to keep the fillets intact. The transition from stovetop to oven is seamless if you use an oven-proof skillet, which allows the fish to cook evenly in the buttery sauce, absorbing all the flavors.

Keep a close eye on the fish in the oven; the line between perfectly flaky and overdone is thin. The fish should be just opaque and flake easily with a fork. Remember, the residual heat will continue to cook the fish slightly even after it’s removed from the oven.

Keto Lemon Butter Chilean Sea Bass in Skillet

Variations to Spice Up Your Sea Bass

Herb-Encrusted Chilean Sea Bass

For those who adore a herbaceous touch, coat your sea bass fillets in a mixture of crushed almonds, parsley, and thyme before searing. This creates a crunchy exterior that complements the tender fish.

Spicy Lemon Butter Sauce

If you’re a fan of heat, add a pinch of red pepper flakes to the lemon butter sauce. This will give a spicy kick that balances the richness of the butter.

Mediterranean-Style Sea Bass

Incorporate chopped olives, capers, and sun-dried tomatoes into the sauce for a Mediterranean twist. These ingredients add complexity and a savory depth to the dish.

Substitutions for Dietary Needs and Preferences

While Chilean Sea Bass is the star of this recipe, you can substitute it with other firm, white fish like halibut or cod if needed. For a dairy-free version, use a high-quality plant-based butter. And, if you’re avoiding nightshades, omit the garlic and use a garlic-infused olive oil instead.

Frequently Asked Questions

Can I make this dish ahead of time?
It’s best served fresh, but you can prep the sauce in advance and reheat it gently while the fish cooks.

Is this recipe suitable for meal prep?
Yes, though the texture is best when fresh, you can refrigerate and reheat it carefully in the oven.

Can I use frozen Chilean Sea Bass?
Absolutely, just ensure it’s fully thawed and patted dry before cooking.

How can I tell when the fish is done?
The flesh will be opaque and flake easily with a fork. Avoid overcooking to maintain moisture.

What sides pair well with this dish?
Opt for low-carb sides like sautéed spinach, cauliflower mash, or a crisp green salad.

Keto Lemon Butter Chilean Sea Bass

Delight in the exquisite flavors of the Keto Lemon Butter Chilean Sea Bass, a succulent and flaky fish dish perfectly paired with a rich, tangy lemon butter sauce, ideal for an impressive keto-friendly dinner.
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Prep Time 15 minutes
Cook Time 15 minutes
Total Time 30 minutes
Course Dinner
Cuisine Chilean
Servings 4 servings
Calories 380 kcal


  • Oven-proof skillet
  • Measuring cups and spoons
  • Cutting board
  • Knife
  • Citrus juicer
  • Zester


  • 4 fillets Chilean sea bass 6 ounces each
  • ¼ cup unsalted butter
  • 2 tablespoons extra virgin olive oil
  • 1 lemon juiced and zested
  • 2 cloves garlic minced
  • ¼ teaspoon sea salt
  • ¼ teaspoon black pepper
  • 1 tablespoon fresh parsley chopped
  • 1 teaspoon fresh thyme leaves
  • Lemon slices for garnish


  • Preheat your oven to 400°F (200°C).
  • Season the Chilean sea bass fillets with salt and pepper on both sides.
  • In a large oven-proof skillet, heat the olive oil over medium-high heat.
  • Once hot, add the sea bass fillets, skin side down, and cook for 3-4 minutes until the skin is crispy.
  • Flip the fillets carefully and cook for an additional 2 minutes.
  • Remove the fillets from the skillet and set them aside on a plate.
  • In the same skillet, reduce the heat to medium and add the butter.
  • Once melted, stir in the minced garlic and cook for 1 minute until fragrant.
  • Add the lemon juice, lemon zest, parsley, and thyme to the skillet and stir to combine.
  • Return the sea bass fillets to the skillet, spooning the lemon butter sauce over the fillets.
  • Transfer the skillet to the preheated oven and bake for 7-10 minutes, or until the fish flakes easily with a fork.
  • Serve the Chilean sea bass hot, garnished with lemon slices and a spoonful of the lemon butter sauce.


Ensure your skillet is oven-proof before using it in the oven.
Adjust cook time if using larger or smaller fillets to avoid overcooking.
For additional flavor, consider adding capers or diced olives to the lemon butter sauce.
This recipe is keto-friendly, as it is high in healthy fats and low in carbohydrates.


Calories: 380kcalCarbohydrates: 2gProtein: 32gFat: 28gFiber: 1gNet Carbs: 1g
Keyword High Fat Low Carb Fish, Keto Chilean Sea Bass, Keto Dinner, Lemon Butter Fish, Low Carb Sea Bass Recipe
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