Pan-Seared Antarctic Toothfish with Citrus Herb Butter

By · Reviewed by AislePrompt Editorial · ·

A delicate pan-seared fish dish featuring Antarctic toothfish, enhanced by a bright citrus herb butter sauce that highlights the fish's mild flavor. This seafood ready in about 25 minutes pairs 6 oz each Antarctic toothfish fillets, Kosher salt, Freshly ground black pepper for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 320 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 10 min Cook: 15 min Serves 4 Seafood cuisine 320 cal/serving
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Ingredients

Instructions

  1. Step 1: Pat 4 Antarctic toothfish fillets dry with paper towels and season both sides with 1 tsp kosher salt and 1/2 tsp freshly ground black pepper.
  2. Step 2: Heat 2 tbsp olive oil in a large nonstick skillet over medium-high heat until shimmering, about 2 minutes.
  3. Step 3: Add the fillets skin-side down and cook for 4-5 minutes without moving until the edges are crispy and golden; carefully flip and cook for another 3 minutes until the fish is opaque and flakes easily.
  4. Step 4: Remove the fish to a warm plate and reduce heat to medium-low. Add 4 tbsp unsalted butter and 3 minced garlic cloves to the skillet; cook, stirring constantly, until butter is melted and garlic is fragrant, about 1 minute.
  5. Step 5: Stir in 2 tbsp finely chopped fresh parsley, 1 tsp lemon zest, 1 tsp lime zest, 2 tbsp fresh lemon juice, and 1 tbsp fresh lime juice; cook for 30 seconds until the sauce thickens slightly.
  6. Step 6: Spoon the citrus herb butter sauce over the fish and serve immediately.

Equipment for this recipe

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Frequently asked questions

How long does Pan-Seared Antarctic Toothfish with Citrus Herb Butter take to make?

Total time is about 25 minutes (10 min prep + 15 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Pan-Seared Antarctic Toothfish with Citrus Herb Butter?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep kosher salt from drying out.

Can I substitute ingredients in Pan-Seared Antarctic Toothfish with Citrus Herb Butter?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Pan-Seared Antarctic Toothfish with Citrus Herb Butter for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

What goes well with Pan-Seared Antarctic Toothfish with Citrus Herb Butter?

Seafood seafood like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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