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    Home » Recipes » Recipes

    Pan-Seared Blackened Tuna Recipe

    Published: Oct 15, 2022 · Modified: Jan 6, 2025 by Christina Jolam · This post may contain affiliate links. See end of article for more information. · Leave a Comment

    Jump to Recipe·Leave a Review
    Blackened Tuna on a salad

    It's one of the easiest ways to get a dynamite seafood dish on the table in a hurry - this Blackened Tuna Recipe takes literally seconds, and produces a restaurant quality meal you'll be proud to serve.

    Finished recipe served on a colorful salad on a yellow plate garnished with peanuts and lime

    These blackened tuna steaks get their flavor from a combination of a thin layer of honey, followed by a generous roll in Cajun seasoning. Any store-bought brand will do, or you can make it from scratch using this homemade blackening season we used for our blackened grouper earlier this year.

    The honey provides a subtle balance to the big flavors in the blackened seasoning, and promotes the charring process.

    For an Italian version of this rare tuna experience, try out my Italian Tuna Crudo!

    What you'll need to make this recipe:

    ingredients for recipe laid out on a table and labeled

    Step by step instructions for this recipe:

    1. Prep tuna

    To begin, preheat a cast iron skillet over medium high heat on the stove. Using paper towels, dry your tuna fillets very well.

    Pour two tablespoons Cajun seasoning (store bought Cajun spices or homemade using this blackening seasoning blend). Using a pastry brush or knife, lightly coat each tuna steak in honey, then dip into the Cajun seasoning, ensuring the top and bottom of each fillet is fully coated in the seasoning mix.

    tuna being seasoned

    You can cover the sides of the tuna in the spice mixture, as well, but I prefer to keep the edges clean. This also helps me see how quickly the fish is cooking, as I can see the cooked, white edge of the fish move as it cooks through.

    2. Sear tuna

    Add two tablespoons of neutral oil (such as canola oil or avocado oil) to the hot skillet. Gently place steaks coated in spicy dry rub into the pan when oil is hot. Leave the steaks, undisturbed in the large skillet, for about 30-45 seconds to get a quick sear. Using a thin spatula, flip each tuna steak to the opposite side, allowing it to form a spicy crust for about another 45 seconds.

    seasoned fish being cooked in cast iron skillet

    If you prefer a more medium experience with a pink center, that will take about 1 minute per side - depending on the thickness of the tuna. Transfer the seared tuna steaks to a cutting board and let the tuna rest while you prepare the remainder of your meal.

    2 blackened tuna steaks on a plate

    3. Serve and enjoy

    When ready to serve, slice the tuna using a very sharp knife. Serve over a salad, in a taco, or as an entree with a squeeze of lemon juice, roasted vegetables and a baked potato.

    finished recipe served over a colorful salad on a white plate

    FAQ's and Serving Suggestions:

    What can I serve with blackened ahi tuna?

    My favorite way to serve it these days is over an Asian salad with Vietnamese Peanut Sauce and a few slices of the rare tuna. But I'm also a huge fan of serving this blackened tuna in a corn tortilla for tuna tacos with Mango Salsa. Check out all my favorite Sides for Tuna Steak.

    What is the best kind of tuna to use for this dish?

    We've touched on this before, but sushi grade tuna is a marketing term, not a regulatory term. I buy it when I can find it. But I trust the fishmonger to tell me what is freshest that day. Ahi tuna steak, yellowfin tuna, and even tuna loin would all work well in this recipe.

    Can I use frozen tuna or do I need to buy fresh?

    Either one works well! If using frozen, thaw and dry thoroughly before seasoning and cooking.

    Can I use different spices with the same cooking method?

    You sure can! Sometimes I'll create an Asian-inspired spice rub with garlic powder, onion powder, ground ginger and sesame seeds and serve the dish with wonton chips and spicy soy sauce. Or you could use a sweet-spicy BBQ dry rub and throw the steaks on the grill, for that outdoorsy charred flavor.

    How to store leftover blackened tuna?

    To store, transfer to an airtight container and keep in the refrigerator for up to 48 hours.

    Print
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    finished recipe sliced and served over a colorful salad

    Pan-Seared Blackened Tuna Recipe


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    • Author: Christina Jolam
    • Total Time: 15 minutes
    • Yield: 2 1x
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    Ingredients

    Scale

    2 6-ounce tuna steaks

    1 tablespoon honey

    2 tablespoons cajun blackening seasoning

    2 tablespoons neutral oil

    Salt and black pepper, to taste


    Instructions

    1. To begin, preheat a cast iron skillet over medium-high heat on the stove. Using paper towels, dry your two fish fillets very well. Pour two tablespoons cajun seasoning (store bought or homemade using this blackening seasoning blend recipe). Using a pastry brush or knife, lightly coat each tuna steak in honey, then dip into the cajun seasoning, ensuring the top and bottom of each fillet is fully coated in the seasoning mix.
    2. You can cover the sides of the tuna in the spice mixture, as well, but I prefer to keep the edges clean (This also helps me see how quickly the fish is cooking, as I can see the cooked, white edge of the fish move as it cooks through).
    3. Add two tablespoons of neutral oil to the hot skillet. Gently lower the spice-crusted tuna steaks into the pan. Leave the steaks, undisturbed in the frying pan, for about 30 - 45 seconds to get a quick sear. Using a thin spatula, flip each piece of meat to the opposite side, allowing it to form a spicy crust for about another 30 seconds.
    4. Transfer the seared tuna steaks to a cutting board and let the tuna rest while you prepare the rest of your meal.
    5. When ready to serve, slice the tuna using a very sharp knife. Serve over a salad, in a taco, or as an entree with roasted vegetables and a baked potato.

    Notes

    I have found some cajun seasonings to be quite salty, and others require the addition of salt. If using store-bought spices, test your seasoning to determine if you need to add ½ teaspoon of salt to the seasoning mix before rolling your tuna into the spices. 

    • Prep Time: 10
    • Cook Time: 5
    • Category: Easy Recipes
    • Method: Stove Top

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    About Christina Jolam

    Christina Jolam is a fish-forward recipe developer, photographer, and food writer. She creates easy and impressive seafood-focused recipes that home chefs of all levels can make and share. Her recipes and seafood expertise have been featured on CNNHealth, MSN, Pip and Ebby, Savoring the Good, Eat Blog Talk and more. She spends most of her time in a seaside village in Portugal with her adventure-loving husband, Ramesh.

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    Hi, I'm Christina! Here at Weekday Pescatarian, you’ll find delicious seafood recipes, tips for adding more fish to your diet, and a little about my life as an American living in Portugal.

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