Pan Tuna Steaks with Sesame Seeds

Easy Pan Tuna Steaks with Sesame

The sound of a loud, aggressive hiss is exactly what you want when the fish hits the oil. That noise tells you the pan is hot enough to brown the sesame seeds and sear the meat in seconds, leaving the inside tender and red.

This recipe focuses on speed and temperature. Because tuna is so lean, it turns from a tender treat to something rubbery if it stays in the pan too long. We use a high heat sear to get a mahogany crust while keeping the center rare.

You can expect a meal that feels fancy but takes less time than ordering takeout. These pan tuna steaks work best when you don't overthink the timing and rely on the visual cues of the crust.

Why This Method Works

• Surface Dryness: Moisture creates steam, and steam prevents browning. Patting the fish dry ensures the oil fries the surface immediately.
• High heat Searing: Cooking fast at a high temperature browns the outside while the heat barely penetrates the center.

The Ingredient Breakdown

For the Fish

• 2 (6 oz) tuna steaks
• 1 tbsp neutral oil Note: It handles high heat without scorching
• 1/2 tsp kosher salt
• 1/4 tsp black pepper
• 1 tbsp white sesame seeds
• 1 tbsp black sesame seeds

For the Savory Tuna Steak Sauce

• 2 tbsp reduced-sodium soy sauce
• 1 tbsp toasted sesame oil Note: Imparts a rich, toasted aroma
• 1 tsp ginger, freshly grated
• 1 clove garlic, minced
• 1 tsp lime juice

Equipment Needed

A cast iron skillet is ideal for this recipe since it retains heat more effectively than non-stick or stainless steel. A thick-bottomed stainless steel pan is a perfectly good alternative. You will also need a whisk for the sauce and a sharp knife for slicing the medallions.

Step-by-step Cooking Guide

1. Preparing the Surface

Use paper towels to pat the tuna steaks completely dry. Note: This prevents steaming and ensures the seeds adhere. Season both sides with 1/2 tsp kosher salt and 1/4 tsp black pepper.

2. Applying the Coating

In a shallow bowl, combine 1 tbsp white sesame seeds and 1 tbsp black sesame seeds. Press each side of the seasoned fish into the seeds for an even coat.

3. The High heat Sear

Bring 1 tbsp neutral oil to a shimmer in a cast iron pan set to medium-high heat. Carefully place the tuna in the pan.

Sear for 1 to 1.5 minutes per side for a rare center, or 2 minutes per side for medium-rare. Cook until the crust is deep mahogany and the center is cooked to your preferred doneness. USDA guidelines recommend a safe internal temperature of 145°F for fish.

4. The Finishing Rest

Immediately move the tuna to a plate. Let it rest for 3 minutes. Note: This redistributes the juices so the fish remains moist.

5. Glazing the Dish

While the tuna rests, whisk together 2 tbsp reduced-sodium soy sauce, 1 tbsp toasted sesame oil, 1 tsp grated ginger, 1 clove minced garlic, and 1 tsp lime juice in a bowl.

Cut the tuna into 1/2 inch thick medallions and drizzle the sauce over them just before serving.

If Something Goes Wrong

If your pan tuna steaks aren't browning, the oil likely wasn't hot enough. You should hear a loud hiss immediately. If the fish sticks, give it another 30 seconds; it usually releases once the crust forms.

Pan Not Hot Enough

If the tuna looks grey or steamed rather than browned, your pan temperature dropped. Heat the pan for 2 minutes longer before adding the next batch.

Overcooked Center

Tuna goes from medium-rare to overdone very quickly. Use a meat thermometer to catch it at 145°F/63°C if you want it fully cooked, or pull it earlier for a rare finish.

Seeds Falling Off

This happens if the fish is too wet. Use more paper towels to get the surface bone dry before seasoning.

Customizing Your Flavor

If you're trying pan tuna steaks with a different vibe, you can swap the sesame seeds for a crust of cracked black pepper and coriander seeds. I like adding a teaspoon of honey to the sauce for a bit of sweetness.

For a keto-friendly version, the recipe is already almost there. Just ensure your soy sauce is a brand with no added sugar, or use coconut aminos. If you want a zesty lemon pepper version, skip the soy sauce and use melted butter, lemon zest, and lots of cracked black pepper.

Keeping the Fish Fresh

Place any remaining seared tuna in an airtight container and keep it refrigerated for a maximum of 2 days.

Skip the microwave when reheating, as it tends to overcook the middle and results in a rubbery texture. For best results, serve the fish chilled straight from the refrigerator. If you reheat it, heat it until the center reaches 165°F/74°C.

It is best not to freeze this dish. Thawing causes the rare center to lose its structure, leaving the fish feeling mushy.

Plating and Serving

Cut the tuna across the grain into 1/2 inch medallions to highlight the striking contrast between the dark mahogany crust and the red center. I suggest serving this over steamed bok choy or a crisp cucumber salad.

For a heartier meal, pair the fish with quinoa or jasmine rice. Wait until the very last moment to drizzle the sauce over the tuna to ensure the sesame coating stays crunchy.

Critical Sodium Level