There’s something undeniably special about the way fresh seafood can transport you right to the coast, even if you’re miles away. The moment I laid my hands on some beautiful Chilean sea bass fillets, I knew I had to create something not only delicious but also quick and effortless. Picture this: the scent of garlic mingling with the bright notes of lemon as it fills your kitchen, promising a meal that’s both elegant and comforting.
After a long week filled with takeout, I craved a dish that felt like a celebration but didn’t require a culinary degree. This oven-baked Chilean sea bass is my go-to remedy—a dish that’s simple enough for a weeknight yet impressive enough for guests. With just a handful of ingredients and a mere 25 minutes of your time, you can whip up a healthy and flavorful meal that will surely impress anyone at your dinner table. So, let’s dive into this easy recipe that checks all the boxes for flavor, ease, and crowd-pleasing appeal!
Why You'll Love This Chilean Sea Bass (Oven Baked)
- This recipe is incredibly easy to prepare, allowing you to enjoy a gourmet meal without spending hours in the kitchen.
- The flavor combination of garlic, lemon, and herbs creates a deliciously aromatic dish that will have everyone asking for seconds.
- Its versatility means you can serve it with a variety of sides, from roasted vegetables to a fresh salad, making it perfect for any occasion.
- Not to mention, the visual appeal of the beautifully baked fish topped with lemon slices will make your table look stunning and inviting.
Chilean Sea Bass Ingredients
For the Fish
• Chilean sea bass fillets – a tender, flaky fish that stands up beautifully to baking and flavors.
• Kosher salt – essential for enhancing the natural taste of the fish.
• Oregano – this herb adds a warm, earthy touch to the dish.
• Italian seasoning – a convenient blend that introduces a hint of variety to each bite.
• Black pepper – freshly cracked for a slight kick that balances the dish.
• Red pepper flakes (optional) – adds a bit of heat if you’re feeling adventurous!
For the Sauce
• Unsalted butter – for richness and a glossy finish to the sauce.
• Olive oil – helps to create a luscious texture while amplifying heart-healthy fats.
• Lemon zest – brings a bright and vibrant flavor that elevates the dish.
• Lemon juice – fresh juiced lemon adds a refreshing zing that pairs perfectly with the fish.
• Garlic – minced for a robust aromatic foundation that enhances overall flavor.
For Topping
• Lemon slices – these not only look appealing but also infuse extra citrus flavor as they bake.
• Fresh oregano and parsley – for a pop of color and a herbaceous finish when garnishing before serving.
This Chilean sea bass recipe checks all the boxes for a delicious, straightforward meal that’s both nutritious and aesthetically pleasing!

How to Make Chilean Sea Bass
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Preheat your oven to 400°F (200°C). This temperature is perfect for achieving that tender, flaky texture we all love in our fish. Lightly grease your baking dish with olive oil to prevent sticking.
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Mix the sauce by combining melted butter, olive oil, minced garlic, lemon zest, lemon juice, oregano, Italian seasoning, kosher salt, black pepper, and optional red pepper flakes in a small bowl. This will create a luscious, flavorful coating for the fish.
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Place the Chilean sea bass fillets in the prepared baking dish. With a brush or spoon, generously coat each fillet with the butter mixture, ensuring every side is covered in that tasty goodness.
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Top each fillet with lemon slices. Not only do these add a lovely presentation but they’ll also impart a subtle citrus flavor while baking.
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Bake uncovered for 12–15 minutes, or until the fish flakes easily with a fork and has turned opaque. Your kitchen will fill with mouthwatering aromas that signal your meal is almost ready!
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Remove the dish from the oven. Carefully spoon the pan sauce over the fillets for an extra burst of flavor.
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Garnish with fresh parsley and oregano right before serving. This final touch adds color and freshness, making your dish as beautiful as it is delicious.
Optional: Serve with a side of roasted vegetables for a complete meal.
Exact quantities are listed in the recipe card below.
Make Ahead Options
These Chilean Sea Bass fillets are a fantastic option for busy home cooks looking to save time without sacrificing flavor! You can prepare the flavorful butter mixture and coat the fish up to 24 hours in advance. Simply store the seasoned fillets in an airtight container in the refrigerator. This allows the flavors to meld beautifully, enhancing the taste even more. When you’re ready to bake, just pop them in the preheated oven as per the original instructions and bake uncovered for 12-15 minutes. Rest assured, your dish will be just as delicious, making weeknight dinners feel like a special occasion with minimal effort!
What to Serve with Chilean Sea Bass?
Imagine a table set to welcome warm, comforting flavors perfect for any occasion.
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Creamy Risotto: The creamy texture balances the flakiness of the sea bass, making each bite a delightful experience. A sprinkle of Parmesan on top can enhance the richness beautifully.
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Garlic Sautéed Spinach: Fresh spinach, lightly sautéed with garlic, offers bright color and nutrients that complement the dish’s rich buttery sauce.
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Citrus Salad: A refreshing salad of mixed greens, oranges, and avocado adds a zesty crunch that echoes the lemony notes in the fish.
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Herbed Quinoa: Nutty quinoa tossed with fresh herbs mirrors the sea bass’s seasoning and provides a healthy, hearty base.
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Roasted Asparagus: Tender asparagus spears drizzled with olive oil and roasted add a satisfying crispness and taste that pairs perfectly with our flaky fish.
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Chardonnay: A chilled glass of crisp Chardonnay enhances the dining experience, its bright acidity matching the zestiness of the dish.
Each of these options dances harmoniously with the flavors of the Chilean sea bass, making your meal feel truly special!
Chilean Sea Bass Variations
Feel free to get creative and make this dish your own; the possibilities are as exciting as the flavors you’ll create!
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Herb-Infused: Substitute fresh thyme or dill for oregano to introduce a different flavor profile that beautifully complements the fish.
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Citrus Blast: Add the zest of an orange or lime along with the lemon for an unexpected twist that brightens the entire dish.
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Spicy Twist: Increase the amount of red pepper flakes or add sliced jalapeños to infuse a delightful kick into your meal.
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Creamy Addition: Stir in a couple of tablespoons of cream or Greek yogurt into the butter mixture for a rich, velvety sauce that elevates the dish.
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Nutty Crunch: Top the fillets with a sprinkle of toasted almond slivers or breadcrumbs before baking for an appealing crunch to contrast the tender fish.
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Garlic Lovers Delight: For a stronger garlic flavor, increase the number of cloves or use roasted garlic, which transforms the dish into a savory sensation.
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Vegetable Medley: Nestle chopped seasonal vegetables like asparagus or cherry tomatoes around the fish, allowing them to roast and mingle with the flavorful sauce.
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Gluten-Free Swap: Instead of breadcrumbs, use ground nuts or gluten-free panko to add texture while keeping the dish entirely gluten-free.
Let your imagination run wild as you explore these variations, each bringing its own warmth and story to your table!
How to Store and Freeze Chilean Sea Bass
Fridge: Store any leftover Chilean sea bass in an airtight container for up to 3 days. Make sure the fish has cooled to room temperature before sealing to maintain freshness.
Freezer: If you have additional uncooked fillets, wrap them tightly in plastic wrap and then place in a freezer-safe bag. They can be frozen for up to 2 months.
Reheating: To reheat, thaw in the fridge overnight, then place in a preheated oven at 350°F (175°C) for about 10 minutes, ensuring it reaches an internal temperature of 145°F (63°C).
Enjoying Leftovers: If you serve it chilled, consider flaking the leftover fish into salads or grain bowls for a quick, delicious meal!
Chef's Helpful Tips
- To ensure your Chilean sea bass cooks evenly, let the fillets sit at room temperature for about 15 minutes before baking.
- A common mistake is overcooking the fish, so keep an eye on it and check for flakiness around the 12-minute mark.
- When mixing the buttery sauce, make sure to thoroughly combine the ingredients for a consistent flavor throughout.
- For optimal results, use a meat thermometer to check that the internal temperature of the fish reaches 145°F (63°C) before serving.
Chilean Sea Bass (Oven Baked) Recipe FAQs
What type of Chilean sea bass should I choose?
Look for fresh fillets with a firm texture and bright color. Avoid any that have a strong fishy smell or dark spots all over, which indicate they may not be fresh. Wild-caught Chilean sea bass is often recommended for its superior flavor and sustainability.
How should I store leftover Chilean sea bass?
Store any leftover fish in an airtight container in the fridge for up to 3 days. Ensure that the fish has cooled completely to room temperature before sealing the container to preserve its freshness. You can also consider wrapping individual portions in plastic wrap for easier grab-and-go meals!
Can I freeze Chilean sea bass?
Absolutely! If you have uncooked fillets, wrap them tightly in plastic wrap and place them in a freezer-safe zip-lock bag, squeezing out as much air as possible. They can be frozen for up to 2 months. To cook, simply thaw in the fridge overnight and proceed with your baking before following the recipe steps.
How can I reheat leftover Chilean sea bass without drying it out?
To reheat, thaw the fish in the refrigerator overnight, then preheat your oven to 350°F (175°C). Place the fillets in an oven-safe dish and cover with foil to retain moisture. Reheat for about 10 minutes or until the internal temperature reaches 145°F (63°C). This ensures your fish remains moist and delicious!
Can my pet eat Chilean sea bass?
While fish can be a healthy addition for many pets, make sure to serve it plain without the seasoning, butter, or oil. Always consult your veterinarian before introducing any new food into your pet’s diet, especially if they have allergies or specific dietary needs.
What if my Chilean sea bass is overcooked?
If you find your fish becomes dry, it could be because it has been left in the oven too long. To salvage it, serve with a sauce or drizzle it with a fresh lemon vinaigrette to add moisture back into the dish. Always start checking for doneness around the 12-minute mark.

Chilean Sea Bass (Oven Baked)
Ingredients
- 4 fillets Chilean sea bass a tender, flaky fish
- 1 teaspoon Kosher salt for enhancing the taste
- 1 teaspoon Oregano adds earthy touch
- 1 teaspoon Italian seasoning adds variety
- 1/2 teaspoon Black pepper freshly cracked for flavor
- 1/4 teaspoon Red pepper flakes optional for heat
- 4 tablespoons Unsalted butter for richness
- 2 tablespoons Olive oil for texture and healthy fats
- 1 teaspoon Lemon zest for vibrant flavor
- 2 tablespoons Lemon juice for refreshing zing
- 3 cloves Garlic minced for flavor
- 1 medium Lemon slices for baking
- 1/4 cup Fresh oregano and parsley for garnish
Method
- Preheat your oven to 400°F (200°C). Lightly grease your baking dish with olive oil.
- Mix the sauce by combining melted butter, olive oil, minced garlic, lemon zest, lemon juice, oregano, Italian seasoning, kosher salt, black pepper, and optional red pepper flakes in a small bowl.
- Place the Chilean sea bass fillets in the prepared baking dish and coat each fillet with the butter mixture.
- Top each fillet with lemon slices.
- Bake uncovered for 12–15 minutes, or until the fish flakes easily with a fork.
- Remove the dish from the oven and carefully spoon the pan sauce over the fillets.
- Garnish with fresh parsley and oregano before serving.




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