Making perfect Seared Ahi Tuna is much easier than you might think. Serve alone or over a fresh salad for a delicious lunch or dinner.
Ingredients
- 8 ounces Ahi Tuna steak ½-pound (230 grams), thawed if frozen
- ½ tablespoon Dijon mustard
- 1 tablespoon white sesame seeds
- 1 tablespoon black sesame seeds
Optional Salad
- ½ teaspoon sea salt
- 2.6 ounces asparagus 0.16 pound (75 grams)
- 1 avocado
- 5 ounces arugula 1 bag (142 grams)
- 2 tablespoons low-sodium soy sauce (see note)
- 1½ tablespoons Dijon mustard
- 1½ teaspoons sesame oil
- ¼-½ teaspoon grated fresh ginger
- ½ lime juiced
- 1 tablespoon honey
- Wasabi optional
Recommended Equipment
- Cast Iron Skillet (optional)
Instructions
For the Tuna
- Preheat a large skillet over high heat.
- Meanwhile, season the tuna steak with Dijon mustard all over. Combine the black and white sesame seeds on a shallow plate, then gently press the tuna steak into seeds to coat it on all sides.8 ounces Ahi Tuna steak,½ tablespoon Dijon mustard,1 tablespoon white sesame seeds,1 tablespoon black sesame seeds
- Place your tuna in the skillet once it is very hot, grill one side for 1-1½ minutes, just to seal and turn over. Make sure you seal all of the sides as well.
- Transfer to a cutting board, let rest for a minute, then slice… Or, contunue on to make the salad below.
For the Optional Salad
- Place hot water into the still-hot skillet with ½ teaspoon of salt. Cut the tips of the asparagus and add them into the skillet once the water is hot. Leave them inside just to cook them briefly, about 3-4 minutes, just until they turn bright green.½ teaspoon sea salt,2.6 ounces asparagus
- Discard the water and add cold water so they stop cooking.
- Slice the tuna steaks into small slices as well as the avocado, or you can also cut the avocado into small squares.1 avocado
- Add arugula to the serving plates for the base and top with slices of tuna and avocado.5 ounces arugula
- Make the dressing: In a small bowl, combine the soy sauce, mustard, sesame oil, ginger, lime, honey, and wasabi (if using). Add a pinch of salt to taste.2 tablespoons low-sodium soy sauce,1½ tablespoons Dijon mustard,1½ teaspoons sesame oil,¼-½ teaspoon grated fresh ginger,½ lime,1 tablespoon honey, Wasabi
- Drizzle the dressing over the salad and serve.

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