Blackened Halibut Recipe

Published on July 16th 2022 by Sarah Leadon.
Last updated on March 20th 2024
This recipe, developed through the collective effort of at least six experts, underwent meticulous research and testing for over three months. Learn more about our process in the art and science behind our recipes. This post may contain affiliate links. Read our Disclosure Policy.
Front View of Blackened Halibut

There is no Cajun cuisine without blackened fish. We can darken foods such as chicken, salmon, and halibut, thanks to Chef Paul Prudhomme, who invented the technique. Blackening is a technique where food is dipped in melted butter and then coated with a mixture of thyme, peppercorns, oregano, garlic powder, thyme, salt, onion powder, and chili powder, and cayenne pepper. The blackened food is seared in a cast-iron skillet until the unique black-brown crust forms. 

This blackened halibut recipe is similar to the original blackened recipe, but we added rosemary and basil to give the halibut a more robust flavor. We also switched things up by serving the blackened halibut on a bun. We slathered gluten-free buns with sriracha mayo, then topped them with shredded cabbage, blackened halibut, and fresh arugula to make the perfect blackened halibut. 

If you are not craving a Blackened Halibut sandwich, you can omit the sandwich ingredients and serve it with Crispy Roasted PotatoesMoro Rice, or Roasted Brussel Sprouts with Bacon. You can even do the blackened halibut with Cauliflower Rice to make the meal keto-friendly. Either way, you will end up with the most delicious blackened halibut.

How do I cook blackened halibut?

To cook blackened halibut, season the halibut fillets with salt, paprika, rosemary, basil, garlic powder, chili powder, and cayenne pepper, then sear it in melted butter until both sides of the fish have a black brownish (blackened) crust. 

 

How long should halibut be cooked?

Blackened halibut should be cooked for 8-10 minutes. 

 

Is halibut a healthy fish?

Yes, halibut is a healthy fish. It has several heart-healthy nutrients, including omega-3 fatty acids, magnesium, selenium, and niacin. Omega-3 fatty acids increase good cholesterol, decrease blood pressure, and inhibit blood clots. Niacin also has a positive effect on triglyceride and cholesterol levels. Selenium can reduce the amount of cholesterol that builds up in the arteries and decrease oxidative stress and inflammation, ultimately lowering your risk of cardiovascular disease. 

 

Is cod or halibut better?

Both cod and halibut are excellent healthy options for lunch or dinner. Halibut contains more vitamin D, selenium, vitamin B6, and healthy fats like polyunsaturated fat and monounsaturated fat. In contrast, cod has high levels of phosphorus and vitamin B5. Cod also contains less saturated fats. Ultimately whether halibut or cod is better depends on your preference. 

 

Author: Sarah Leadon
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Time & Serves

Prep Time
10 mins
Cook Time
10 mins
Total Time
20 mins
Serves
4 persons

Ingredients

Sriracha Mayo
  • 1/4 cup Mayonnaise  

     

  • 1/4 cup Sriracha

     

  • 2 tablespoons Fresh Lemon Juice 

     

  • 1 teaspoon Sugar-Free Substitute

Blackened Halibut
  • 1 teaspoon Kosher Salt

     

  • 2 tablespoons Paprika

     

  • 1 tablespoon Dried Rosemary

     

  • 1 tablespoon Dried Basil

     

  • 1 tablespoon Garlic Powder

     

  • 1 teaspoon Chili Powder 

     

  • 1/4 teaspoon Cayenne Pepper

     

  • 4 6 oz. Halibut Fillets (fillets should be 1 -1 1/2 inches in thickness)

     

  • 4 tablespoons Butter

Sandwich
  • 1 cup Red Cabbage, shredded finely

     

  • 1 cup Arugula 

     

  • 4 Gluten-Free Sandwich Rolls, cut in half, toasted

Instructions

Sriracha Mayo

Whisk the mayonnaise, sriracha, lemon juice, and sugar-free substitute in a small bowl. Cover sriracha mayo with plastic wrap. Place the sriracha mayo into the fridge until you are ready to make the sandwich. 

 

Blackened Halibut

Whisk the kosher salt, paprika, rosemary, basil, garlic powder, chili powder, and cayenne pepper in a small bowl. 

 

To a cutting board, add the halibut fillets. Sprinkle the seasoning mixture over the halibut fillets pressing it into the fish with your fingers. 

 

Add the butter to a large 12-inch nonstick skillet and set it over medium-high heat. Swirl the butter around the pan to coat the skillet in the butter.

 

Once the butter is hot, add the halibut fillets skin-side down and cook them for 3-4 minutes until blackened. 

 

Turn the halibut fillets over using a fish spatula and cook them for 3 minutes until they are blackened, and the fish has an opaque white color. 

 

Remove the blackened halibut from the skillet and place it on a paper towel-lined plate. 

Sandwich

Arrange the bottom burger buns on a serving tray. Add 2 tablespoons of sriracha mayo to each bun. 

 

Top with the shredded cabbage, fish fillets, and arugula. Add the top bun and serve. 

Sarah Leadon
Author:

Delve into the fusion of food and mood with Sarah. Discover the emotional journey within each recipe. Beyond the kitchen, she's an avid reader and music lover, lost in the rhythms of life.

More posts by Sarah Leadon

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blackened halibut, tacos, recipe, how to make, low carb, instant pot, homemade

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Sarah Leadon
Author:

Delve into the fusion of food and mood with Sarah. Discover the emotional journey within each recipe. Beyond the kitchen, she's an avid reader and music lover, lost in the rhythms of life.

More posts by Sarah Leadon