Pan-Seared Antarctic Toothfish with Citrus Herb Butter

By AislePrompt Editorial · Published 2026-06-08 · Updated 2026-06-08

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 recipe, ready in about 25 minutes, pairs 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.

Ingredients

• 4 pieces, 6 oz each Antarctic toothfish fillets
• 1 tsp Kosher salt
• 1/2 tsp Freshly ground black pepper
• 2 tbsp Olive oil
• 4 tbsp Unsalted butter
• 3, minced Garlic cloves
• 2 tbsp, finely chopped Fresh parsley
• 1 tsp Lemon zest
• 1 tsp Lime zest
• 2 tbsp Fresh lemon juice
• 1 tbsp Fresh lime juice

Nonstick skillets worth buying → Best Nonstick Cookware for 2026: Top 5 Skillet Picks + Buying Guide

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.