Blackened Mahi Mahi

5 from 1 vote
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Pan searing is my favorite way to cook blackened mahi mahi. I like to brush the mahi mahi with butter, season it generously, and pan-sear it until fully cooked through.

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three blackened mahi mahi fillets with lemon wedges on the side.

WHAT IS MAHI MAHI?

Mahi-mahi, also known as dolphinfish or dorado, is a type of fish found in warm ocean waters. It’s great for fish tacos, sandwiches, or serving on its own.

WHY YOU’LL LOVE THIS RECIPE

  • It’s low-carb and keto-friendly.
  • Mahi Mahi is a rich source of protein as well as vitamins B3, B6, and B12.
  • It’s flaky, delicious, and cooks in under 10 minutes!
  • You can serve it with creamy corn salad and roasted potatoes for a complete dinner meal.

INGREDIENT NOTES

  • Mahi Mahi – Fresh or frozen mahi mahi will work for this recipe. If using frozen, thaw completely before cooking.
  • Spices – I used a combination of paprika, dried oregano, dried thyme, granulated onion, garlic powder, cayenne pepper, salt, and pepper. But of course, feel free to add or omit any spice.
  • Butter – Adds flavor and helps the spices adhere to the fish.
  • Oil – Use an oil with a high smoking point, such as canola or vegetable oil.
four raw mahi mahi fish fillets, spices, butter, lemon, and oil.

TOP TIPS

  • Pat dry the fish fillets with a paper towel before seasoning them, to get rid of any excess moisture.
  • Cook the fish fillets over medium heat, not high heat otherwise they can burn.
  • Take the fish out of the fridge at least 25 minutes before cooking so it cooks evenly.
two mahi mahi fish fillets cooking in a skillet on the stovetop.

CAN I SEASON THE FISH IN ADVANCE?

Absolutely, in fact, I encourage it! Feel free to season the fish a couple of hours in advance, cover it, and refrigerate it. When you’re ready to cook, take it out of the fridge 25 minutes before cooking.

mahi mahi in a skillet up close.

STORAGE

If you have any leftovers, allow them to cool completely, then transfer them to an air-tight container and refrigerate for up to 2 days. Reheat in the oven, air fryer, or stovetop until heated through but be careful not to cook for too long otherwise it may dry out.

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three blackened mahi mahi fillets with lemon wedges on the side.
5 from 1 vote

Blackened Mahi Mahi

Pan searing is my favorite way to cook blackened mahi mahi. I like to brush the mahi mahi with butter, season it generously, and pan-sear it until fully cooked through.
Prep: 5 minutes
Cook: 7 minutes
Total: 12 minutes
Servings: 4
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Ingredients 

  • 1 lb mahi mahi , about four fillets
  • 3 tablespoons unsalted butter, melted
  • 1 tablespoon paprika
  • 1 tablespoon garlic powder
  • 2 teaspoons granulated onion
  • 1 teaspoon black pepper
  • 1 teaspoon oregano
  • 1 teaspoon dried thyme
  • 1 teaspoon cayenne pepper
  • salt to taste
  • oil, for frying , canola or vegetable oil
  • lemon wedges , optional

Instructions 

  • Pat dry the mahi mahi fillets with a paper towel and then brush butter on both sides of each fillet.
  • In a small bowl, combine all of the spices. Mix well.
  • Season the fillets on both sides with the spice mixture.
  • Heat oil in a skillet over medium heat.
  • Add the mahi mahi fillets to the skillet but don't overcrowd the skillet. I recommend cooking two-three fillets at a time. Cook for 4 minutes, then flip and cook for 3 minutes. I cooked them for a total of 7 minutes but keep in mind that cooking time will vary on the size of the fish. Cook over medium heat, not high heat!
  • Serve with lemon wedges, if desired, and enjoy!

Notes

  • Pat dry the fish fillets with a paper towel before seasoning them, to get rid of any excess moisture.
  • Cook the fish fillets over medium heat, not high heat otherwise, they can burn.
  • Take the fish out of the fridge at least 25 minutes before cooking so it cooks evenly.
  • Use an oil with a high smoking point, such as vegetable or canola oil. Avoid olive oil.

Nutrition

Calories: 191kcal | Carbohydrates: 4g | Protein: 22g | Fat: 10g | Saturated Fat: 6g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 2g | Trans Fat: 0.3g | Cholesterol: 105mg | Sodium: 105mg | Potassium: 573mg | Fiber: 2g | Sugar: 0.4g | Vitamin A: 1557IU | Vitamin C: 1mg | Calcium: 45mg | Iron: 2mg

Nutrition information is automatically calculated, so should only be used as an approximation.

Additional Info

Prep Time: 5 minutes
Cook Time: 7 minutes
Total Time: 12 minutes
Course: Entree
Cuisine: American
Servings: 4
Calories: 191
Keyword: blackened mahi mahi, mahi mahi, pan seared mahi mahi
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