Jamie Oliver’s Tuna Steak Recipe: Seared Perfection With Herb Crust

This tuna steak recipe delivers seared perfection with a crisp herb crust that locks in flavor and moisture. I’ve refined this method to achieve restaurant-quality results at home without complicated techniques.

The key is using fresh, sushi-grade tuna and searing it briefly over high heat. This creates a caramelized exterior while keeping the center tender and perfectly rare or medium-rare, depending on your preference.

Jamie Oliver’s approach inspired the herb crust, which adds an aromatic layer that complements the fish’s natural richness. A simple blend of herbs, garlic, and olive oil does the trick.

With minimal effort and maximum impact, this dish is ready in under 15 minutes. Serve it with a bright lemon wedge or a light salad to balance the meal.

Ingredients for Recipe Tuna Steak Jamie Oliver

Sushi-grade tuna plus a handful of herbs and garlic create this stunning dish.

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The tuna quality is non-negotiable. Sushi-grade means it’s safe to eat rare—look for bright red color, no fishy smell, and ask your fishmonger when it was caught (within 24 hours is ideal). Whole Foods and Trader Joe’s often carry it pre-packaged. For the herbs, fresh is essential; dried won’t give the same aromatic punch. Grab them from the produce section, not the spice aisle.

No fresh herbs? Dried at one-third the amount works in a pinch, but the texture won’t be the same. Out of Dijon? Whole-grain mustard adds a nice crunch. If tuna steaks aren’t available, thick tuna fillets (cut into steaks) are a fine substitute. The olive oil should be something you’d happily drizzle on bread—no need for the expensive stuff, but avoid anything labeled ‘light’.

Tuna steaks keep in the fridge for 1-2 days max—buy them the day you plan to cook. The herb crust can be prepped 1 day ahead and stored in the fridge. Leftovers? Not ideal (tuna’s best fresh), but they’ll hold for 24 hours if tightly wrapped.

Step-by-Step Instructions for Seared Tuna Steak With Herb Crust

Here’s the method. Straightforward, tested, works every time.

Step 1: Prepare the Herb Crust Mixture

In a small bowl, combine the 0.25 cup Fresh Parsley, 1 tbsp Fresh Thyme Leaves, 1 tbsp Fresh Rosemary, 3 cloves Garlic Cloves, 0.5 tsp Red Pepper Flakes, 1 tsp Salt, and 0.5 tsp Black Pepper. Finely chop all the fresh herbs for even distribution in the crust.

Add the 2 tbsp Dijon Mustard and 0.25 cup Olive Oil to the herb mixture. Stir until it forms a thick, cohesive paste. This paste will adhere to the tuna steaks perfectly and create a flavorful crust during searing. The mustard acts as the binding agent while the olive oil helps crisp the herbs.

Step 2: Coat and Sear the Tuna Steaks

Pat the 4 pieces Sushi-Grade Tuna Steaks completely dry with paper towels. This crucial step ensures a good sear rather than steaming the fish. Brush each steak generously with the herb mixture, coating all sides evenly. Press gently to help the crust adhere.

Heat a heavy skillet over medium-high heat until very hot. Add just enough olive oil to lightly coat the pan. Place the tuna steaks in the pan and sear for 2-3 minutes per side for medium-rare, or until the crust is golden brown and crispy. Watch for the edges to turn opaque as they cook.

Step 3: Rest and Serve the Tuna

Transfer the seared tuna steaks to a cutting board and let them rest for 2-3 minutes. This brief rest allows the juices to redistribute throughout the fish, ensuring moist, flavorful slices. The internal temperature will continue to rise slightly during this time.

Slice the tuna steaks against the grain into ½-inch thick pieces. Arrange on serving plates and garnish with the 2 tbsp Capers and lemon wedges. The capers add a briny contrast to the rich tuna, while the lemon brightens each bite. Serve immediately for the best texture and temperature.

Make-Ahead Tips for This Dish

Herb Crust Prep

I always mix my herb crust 1 day ahead—it saves time and lets flavors meld. Combine ¼ cup parsley, 1 tbsp thyme, and 1 tbsp rosemary in a bowl. The oils release overnight, boosting aroma. 💡

Tuna Storage

Buy tuna steaks the same day you plan to cook them. If you must store, keep them in the coldest part of your fridge for 1-2 days max. Wrap tightly in paper towels then plastic to absorb moisture.

Partial Prep

Pat the steaks dry and apply the herb crust 2 hours before cooking. This prevents the crust from sliding off during searing. Keep uncovered in the fridge to maintain texture.

Equipment Ready

Have your skillet, tongs, and serving plates set out 30 minutes before cooking. A hot pan is crucial—I use my Lodge cast iron for even heat. Preheat it while you prep the garnishes.

Lemon and Capers

Slice lemons and drain capers 1 hour ahead. Store them in separate containers in the fridge. This keeps them fresh and ready for that final, bright finish. 🍋

Timing Trick

If serving with sides, start those first. Tuna cooks in 10 minutes total, so have everything else plated and warm. I learned this the hard way—cold sides ruin the experience.

Frequently Asked Questions