Pan-Seared Chilean Sea Bass with Lemon Caper Butter Tips, FAQ & printable recipe

Tips for success

For the best crust, make sure the fish is very dry before seasoning. Use paper towels to pat it thoroughly, and let it sit at room temperature for about 10 minutes before cooking.

A hot pan is essential—if the oil shimmers and ripples, it’s ready. Don’t crowd the pan; cook in batches if necessary. When flipping, use a fish spatula to gently lift and turn the fillets without breaking them.

The sauce comes together quickly, so keep the heat at medium and stir often. The butter should foam but not brown too much; if it starts to brown, reduce the heat. The lemon wheels will soften and release their juice into the sauce, so don’t skip them.

For extra flavor, add a splash of white wine or chicken broth after searing, but this is optional. The dish is best served immediately, but leftovers can be stored in the refrigerator for up to two days.

Variations

• Herb Butter: Replace the capers with 1 tablespoon of chopped fresh dill or tarragon and add 1 teaspoon of Dijon mustard to the butter sauce. The herbs add a fresh, aromatic note that complements the fish beautifully.
• Spicy Kick: Add 1/2 teaspoon of red pepper flakes or a minced fresh chili to the butter along with the capers. The heat balances the richness of the fish and adds a lively kick.
• Garlic Lover's: Add 2 minced garlic cloves to the pan after flipping the fish, and cook for 30 seconds before adding the butter. The garlic infuses the sauce with a savory depth that pairs well with the lemon and capers.
• White Wine Sauce: After searing the fish, deglaze the pan with 1/4 cup of dry white wine, scraping up the browned bits. Let it reduce by half, then proceed with the butter and capers. The wine adds acidity and complexity to the sauce.

Storage and make-ahead

Fridge

Store leftover sea bass in an airtight container in the refrigerator for up to 2 days. The sauce can be stored separately for up to 2 days.

Freezer

Cooked sea bass can be frozen in a freezer-safe container for up to 1 month. Thaw overnight in the refrigerator before reheating.

Reheat

To reheat, place the fish in a skillet over low heat with a splash of water or lemon juice, cover, and warm gently for 3-4 minutes.

Leftover sea bass can be stored in an airtight container in the refrigerator for up to 2 days. The sauce may separate slightly upon reheating, so gently warm it in a skillet over low heat, adding a splash of water or lemon juice to bring it back together.

Reheat the fish gently to avoid drying it out. It’s best to enjoy it fresh, but these steps help maintain quality.

The lemon caper butter sauce can be made ahead and stored in the refrigerator for up to 2 days. Reheat it gently before serving. The fish is best cooked fresh, but it can be seasoned and prepped a few hours in advance and kept in the refrigerator. The cheese can be grated ahead and stored in an airtight container for up to a week.

Serving ideas

Serve the sea bass hot, with the lemon caper butter sauce spooned generously over each fillet. The dish pairs well with steamed rice, roasted potatoes, or a simple green salad. For a more elegant presentation, place the fish on a bed of sautéed spinach or creamy polenta. The sauce is rich, so a light side dish balances the meal.

For a family-style dinner, arrange the fillets on a large platter and pour the sauce over the top. Garnish with extra lemon wheels and fresh parsley.

The dish is best enjoyed immediately, while the fish is still flaky and the sauce is warm. Leftovers can be stored in the refrigerator, but the texture of the fish will change upon reheating.

Frequently asked questions

Recipe card

Pan-Seared Chilean Sea Bass with Lemon Caper Butter

Prep 10 minCook 15 minTotal 25 minServes 4

Ingredients

• 4 Chilean sea bass fillets (6 oz each)
• 1 tsp kosher salt
• 1/2 tsp black pepper
• 2 tbsp olive oil
• 3 tbsp unsalted butter
• 2 tbsp capers, drained
• 1 lemon, sliced into wheels
• 2 tbsp fresh parsley, chopped

Instructions

1. Pat the Chilean sea bass fillets dry with paper towels. Season both sides evenly with kosher salt and black pepper. Slice the lemon into thin wheels and chop the parsley. Set everything near the stove so it is ready to go.
2. Using a stainless steel box grater, freshly grate a solid block of cheese (such as Parmesan) into a fluffy mound. Set aside for later use.
3. Heat the olive oil in a large skillet over medium-high heat until shimmering. Carefully place the seasoned sea bass fillets in the pan, skin-side down if they have skin. Cook without moving for 3-4 minutes until the bottom is golden and crispy.
4. Flip the fillets gently with a fish spatula. Continue cooking for another 3-4 minutes until the fish is opaque and flakes easily with a fork. The internal temperature should reach 145°F (63°C).
5. Reduce the heat to medium. Add the butter to the skillet, letting it melt and sizzle. Add the capers and lemon wheels to the pan, spooning the bubbling butter over the fish as it cooks for another minute.
6. Sprinkle the freshly grated cheese over the fish and into the sauce. Let it melt into the butter. Add the chopped parsley and give the pan a gentle swirl to combine.
7. Carefully transfer the sea bass to serving plates. Spoon the lemon caper butter sauce over each fillet. Slice through the center of the fish to show the flaky interior, then serve hot.

Contains: fish, milk

Estimated nutrition per serving

Calories

420

Protein

35 g

Carbohydrates

4 g

Fat

30 g

Automatic estimate from the ingredient list, not laboratory-verified.