Gluten Free Tuna Steak with Wasabi Butter
Restaurant-quality seared tuna at home is one of those dinners that feels far more impressive than the effort involved, and this two-serving recipe absolutely delivers. A quick tamari, sesame oil, and fresh ginger marinade builds deep, savory flavor before the steaks even hit the pan, and the key swap here is tamari in place of regular soy sauce — keeping everything wheat-free without sacrificing a single drop of umami. The wasabi butter is the real showstopper: creamy, punchy, and brightened with a squeeze of fresh lime, it melts over the hot seared crust in a way that makes every bite feel indulgent. Getting a screaming-hot cast iron skillet is the move for that deeply browned exterior, and the whole cook takes just a few minutes per side. Cross-contamination from bottled sauces is one of the sneakiest pitfalls in Asian-inspired cooking, so double-checking that your tamari and wasabi paste are certified safe is worth the thirty-second label scan. Finish with chives and sesame seeds if you have them — they add color and a little extra texture that really ties the plate together.
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Learn more →Ingredients
2 servings
For the tuna
- 2 ahi tuna steaks (about 6 oz each, 1-inch thick)
- 2 tbsp tamari
- 1 tbsp toasted sesame oil
- 1 tsp fresh ginger, finely grated
- ¼ tsp black pepper
- 1 tsp neutral oil (such as avocado or canola oil)
For the wasabi butter
- 3 tbsp unsalted butter, softened
- 1 ½ tsp wasabi paste
- 1 tsp tamari
- 1 tsp fresh lime juice
For serving
- 1 tbsp fresh chives, thinly sliced (optional)
- 1 tsp sesame seeds (optional)
Instructions
- 1
In a small bowl, stir together the tamari, toasted sesame oil, grated ginger, and black pepper. Place the tuna steaks in a shallow dish, pour the marinade over them, and turn to coat. Let marinate at room temperature for 15 minutes. Reserve the marinade — do not reuse it as a sauce.
- 2
While the tuna marinates, make the wasabi butter: in a small bowl, mash together the softened butter, wasabi paste, tamari, and lime juice until smooth and evenly combined. Set aside at room temperature.
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