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Air fryer blackened tuna steak with a bold seasoned crust and tender pink center, served with lemon wedges, fresh dill, and microgreens on a white plate.
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Air Fryer Blackened Tuna Steak - Bold Flavor, Fast Finish

Prep Time10 minutes
Cook Time8 minutes
Total Time18 minutes
Servings: 2 servings

Ingredients

  • 2 tuna steaks (ahi/yellowfin or bigeye), about 6 to 8 ounces each, 1 to 1.5 inches thick
  • 1 tablespoon olive oil (or avocado oil)
  • 1 tablespoon paprika (use smoked for extra depth)
  • 1 teaspoon garlic powder
  • 1 teaspoon onion powder
  • 1 teaspoon dried thyme
  • 1 teaspoon dried oregano
  • 1 teaspoon kosher salt (start with less if your tuna is brined)
  • 1/2 teaspoon black pepper
  • 1/2 to 1 teaspoon cayenne pepper (adjust to heat preference)
  • 1/2 teaspoon brown sugar (optional, helps with caramelization)
  • Lemon wedges for serving
  • Fresh parsley or chives (optional, for garnish)

Instructions

  • Preheat the air fryer: Set to 400°F (200°C). Let it heat for at least 3 minutes so the basket is hot.
  • Pat the tuna dry: Use paper towels to remove surface moisture. This helps the spice crust stick and crisp.
  • Brush with oil: Lightly coat both sides of each steak with olive oil. Don’t drench it—just a thin layer.
  • Mix the blackening rub: In a small bowl, combine paprika, garlic powder, onion powder, thyme, oregano, salt, black pepper, cayenne, and brown sugar (if using).
  • Season generously: Press the spice mix onto all sides of the tuna. You want a solid, even coating.
  • Air fry: Place the steaks in the preheated basket in a single layer. Cook 3 to 4 minutes, then flip and cook another 2 to 3 minutes for rare to medium-rare. Thicker steaks may need an extra minute.
  • Check doneness: For food safety guidance, fish is considered done at 145°F (63°C). For a sushi-style center, many people prefer 115°F to 125°F (46°C to 52°C). Choose your level, but be aware of risks if undercooking.
  • Rest and finish: Let the tuna rest 2 minutes. Squeeze with lemon and sprinkle herbs if you like. Slice across the grain.
  • Serve: Pair with a crisp salad, rice, sautéed greens, or tuck slices into warm tortillas with slaw.