Blackened Mahi Mahi

Inexpensive and easy to cook, this blackened mahi mahi is coated with a flavorful spice seasoning and charred to perfection.

Blackened Mahi Mahi on a corn tortilla
Blackened Mahi Mahi on a corn tortilla

This blackened mahi mahi recipe is a great weekday meal when you want something fast and nutritious. This Hawaiian fish is firm yet flaky and only takes minutes to cook.

We use a Cajun seasoning mix to achieve a delicious blackened crust on the fish. This seasoning mix contains garlic powder, onion powder, cayenne, smoke paprika, dried oregano, dried thyme, salt and pepper.

Blackened Mahi Mahi in a Taco

Enjoy mahi mahi blackened over rice with some roasted vegetables. Or for a low carb option, place on top of a salad with a slice of lemon. Our favorite way to enjoy this fish is to make blackened fish tacos.

Make a quick, creamy coleslaw, blacken your mahi mahi, put it on a tortilla and dinner is ready.

What Does Mahi Mahi Taste Like

Mahi mahi is a mild tasting fish with a faintly sweet taste. It’s more fishy tasting than cod or haddock but less than a swordfish.


This fish is a kind of dolphin fish (but definitely NOT a dolphin) and in Hawaiian mahi mahi translates to strong strong.

How To Make Blackened Mahi Mahi

The first step is to take your store bought mahi filets and pat dry with paper towels. Removing moisture from the filets will help the fish to get a nice sear, rather than steaming.

Next it’s time to season our fish. Generously season the filets on both sides with Cajun blackened seasoning. Since this already contains salt, no need to add more salt.

Now add olive oil to a cast iron skillet over medium high heat. Put in your fish and lower to medium heat. Cook for 2 – 3 minutes until it’s nicely browned and flip.

Cook for another 2 – 3 minutes and remove fish from the skillet. Place on a plate with a paper towel. 

To make blackened mahi mahi tacos, try our coleslaw recipe. We like to use corn tortillas, but you can use flour if you prefer. Warm your tortillas and then top with pieces of the fish.

Top with a healthy dollop of the coleslaw and a squeeze of fresh lime. You could also top it with a delicious habanero mango salsa.

Blackened Mahi Mahi in a Taco

What Sides Go Good With Fish Tacos

There are so many delicious sides to enjoy with fish tacos. Try cilantro lime rice, creamy pinto beans, fresh guacamole, and pico de gallo with tortilla chips. 

Other great sides include jalapeno poppers, grilled corn, Caesar salad, gazpacho, and refried beans.

What is the White Sauce On Fish Tacos Made Of

Enjoy fish tacos topped with a white sauce consisting of sour cream, mayo and lime juice. Additional add-ins include cumin, jalapeno, cilantro, avocado, and hot sauce.

What Is The Best Fish For Fish Tacos

Flakey and lean saltwater white fish are the best for fish tacos. They are inexpensive, cook quickly, and are mild in flavor so you can season them to your liking. 

Popular white fish for fish tacos include halibut, cod, mahi mahi, bass, and snapper.

Are Fish Tacos A Healthy Choice

Yes, fish tacos can be a healthy meal. Fish is a great source of protein and contains omega-3 fatty acids which are good for brain function and your heart.

Go light on the white sauce or add less mayo to your slaw, and your fish tacos will be low in fat. Additionally, grilled fish is a healthier option for fish tacos than fried fish.

How Do I Make My Fish Really Crispy

Pat your fish to remove the excess moisture as much as possible. If there is excess moisture your fish will steam rather than sear in a hot skillet.

2 lbs of fresh mahi mahi

2 tbsp Cajun blackening seasoning

1 tbsp neutral oil

Pat dry with paper towels on all sides with a paper towel to remove the excess moisture. 

Sprinkle the seasoning over the filets and spread the seasoning on both sides. Add your oil to a skillet over medium high heat until it slightly begins to smoke.

At this point, add your filets and turn the heat down to medium. Cook for 2 – 3 minutes until nicely browned and flip. Cook for another 2 – 3 minutes and remove from the skillet. 

Blackened Mahi Mahi in a Taco

Blackened Mahi Mahi

Author: Maddy & JD – Them Bites
Inexpensive and easy to cook, this blackened mahi mahi is coated with a flavorful spice seasoning and charred to perfection.
5 from 1 vote
Prep Time 5 minutes
Cook Time 5 minutes
0 minutes
Total Time 10 minutes
Course dinner, Lunch
Cuisine American, Mexican
Servings 4 people
Calories 120 kcal


  • 1 Cast iron skillet


  • 2 lbs. Fresh Mahi Mahi
  • 2 tbsp Cajun Blackening Seasoning
  • 1 tbsp Neutral Oil

Recipe Instructions

  • Add oil to the pan, and let it get to a hot heat. Pat your fish dry, and rub with seasoning, and then cook in the pan.


Calories: 120kcalProtein: 40gFat: 2g
Keyword blackened mahi mahi
Tried this recipe?Mention @thembitesrecipes or tag #thembites

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