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blackened mahi mahi fillets in air fryer basket
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5 from 2 votes

Air Fryer Mahi Mahi

Air Fryer Mahi Mahi is a quick seafood dinner with flaky fish, bold blackening seasoning, and a creamy dill caper sauce. This easy air fryer fish recipe cooks fast, keeps cleanup simple, and makes a flavorful weeknight meal with rice, vegetables, tacos, or a fresh salad.
Prep Time5 minutes
Cook Time8 minutes
Total Time8 minutes
Course: Air Fryer
Cuisine: American
Keyword: air fryer mahi mahi, blackened mahi mahi, cajun mahi mahi
Servings: 4 servings

Ingredients

Blackening Spice Mixture (or use store-bought blackening spice)

  • 1 tbsp smoked paprika
  • 1 tbsp garlic powder
  • 1 tbsp oregano dried
  • 2 tsp thyme dried
  • 1 tsp sugar
  • 1 tsp black pepper
  • ¾ tsp salt
  • ¼ tsp cayenne pepper use more if you like it spicier

For the Mahi Mahi

  • 4 fillets mahi mahi about 6 oz each
  • 2 tbsp vegetable oil

Dill Caper Sauce

  • ½ cup mayonnaise
  • 1 tbsp lemon juice
  • 1 tbsp dill freshly chopped
  • 2 tsp capers rinsed and chopped
  • 2 tsp sweet pickle relish
  • 1 tsp Dijon mustard

Instructions

  • Preheat the air fryer to 400°F.
  • Combine the spices in a wide, shallow dish. You can use a casserole dish or sheet pan.
  • Use a paper towel to pat the mahi mahi filets dry, then brush or spray them with a thin coat of oil.
  • Place the fillets in the dish and coat the mahi mahi in the blackening seasoning, pressing down to get the spices to adhere to the fish. 
  • Transfer the mahi mahi to the air fryer in a single layer. If you have a small air fryer, cook the fillets in batches. 
  • Air fry for 8 to 10  minutes, flipping the fish halfway through the cooking time. If the fish filets are less than ½ inch thick, reduce the cooking time to 4 to 5 minutes. Use a thermometer or fork to test for doneness. It should flake easily when done cooking. 

For the Dill Caper Sauce

  • Combine all the ingredients for the dill sauce in a small dish. Serve the sauce with the blackened mahi mahi.

Notes

  • Don't overcrowd the air fryer basket. This helps to ensure that the fish cooks evenly.
  • If you use frozen mahi mahi, ensure they are completely thawed before you cook them. The blackening seasoning will not stick well to frozen filets. 
  • If you have an instant-read thermometer, the fish should reach an internal temperature of 140°F to 145°F. If you don't have a thermometer, use a fork to see if the fish flakes easily. 

Storing Leftovers

  • In the fridge. Store the mahi mahi in an airtight container for up to 3 days.
  • In the freezer. Store the mahi mahi in an airtight container or vacuum bag for up to 6 months.
  • Store the sauce in the fridge in an airtight container for 5-7 days.

Reheating Leftovers

  • Reheat the mahi mahi in the air fryer at 400°F for 3-5 minutes on each side. If frozen, let the mahi mahi thaw completely before reheating in the air fryer.

Nutrition

Serving: 1g | Calories: 448kcal | Carbohydrates: 7g | Protein: 39g | Fat: 29g | Saturated Fat: 4g | Polyunsaturated Fat: 24g | Cholesterol: 161mg | Sodium: 843mg | Fiber: 2g | Sugar: 2g