This air fryer blackened mahi mahi is one of my favorite ways to cook fish. It’s fast, full of flavor, and you only need a handful of spices to make it happen.
Blackening seasoning gives the outside of the fish a slightly smoky, spicy crust while the inside stays tender and flaky. It sounds fancy but it’s actually really simple.
The air fryer does all the heavy lifting here. No need to stand over a hot skillet or deal with oil splatter. Just season the fillets, pop them in, and dinner is ready in about 12 minutes.
If you’ve never tried mahi mahi before, it’s a mild white fish that holds up really well to bold seasonings. It doesn’t have a strong fishy taste, so even picky eaters tend to enjoy it.
Squeeze some fresh lime on top before eating and you’ve got yourself a restaurant-quality meal at home. Let me show you how to make it.
Why You’ll Love This Recipe
Incredible Flavor in Minutes – The homemade blackening spice blend creates a bold and smoky crust that makes this mahi mahi taste restaurant-quality.
Perfectly Crispy Outside and Tender Inside – The air fryer gives each fillet a beautifully seasoned crust while keeping the inside flaky and moist.
Only a Handful of Ingredients – You just need mahi mahi fillets and a few common spices you likely already have in your pantry.
Ingredients
- 4 Mahi Mahi Fillets (6 oz each)
- 2 tbsp Olive Oil
- 1 tbsp Paprika
- 1 tsp Garlic Powder
- 1 tsp Onion Powder
- 1 tsp Dried Thyme
- 1/2 tsp Cayenne Pepper
- 1/2 tsp Black Pepper
- 1/2 tsp Salt
- 1 Lime, cut into wedges
How To Make
Step 1
Pat mahi mahi fillets dry and brush both sides with olive oil.
Step 2
In a small bowl, combine paprika, garlic powder, onion powder, dried thyme, cayenne pepper, black pepper, and salt.
Step 3
Generously coat both sides of each fillet with the blackening spice mixture, pressing to adhere.
Step 4
Place fillets in air fryer basket and air fry at 390°F for 10-12 minutes until fish is opaque and flakes easily.
Step 5
Serve immediately with lime wedges for squeezing over the top.
Tips
Dry the Fish Really Well
This is the most important step for getting that dark, flavorful blackened crust. Use paper towels and press firmly on each fillet to remove as much moisture as possible.
If the surface is still wet, the spice mixture won’t stick properly and it’ll steam off in the air fryer instead of forming that crust. Spend a good 30 seconds per side pressing down with fresh paper towels.
Press the Seasoning In
Don’t just sprinkle the spice mix on top. After coating each fillet, use your fingers to firmly press the seasoning into the fish on both sides. You want it almost embedded into the surface.
This keeps the spices from blowing around in the air fryer fan and gives you that solid blackened layer. The olive oil you brushed on acts like glue here, so make sure you coated both sides evenly before adding the spices.
Don’t Overcrowd the Basket
Leave about an inch of space between each fillet so the hot air can circulate around every piece. If the fillets are touching or overlapping, the sides won’t cook evenly and you won’t get that crust all the way around.
Depending on your air fryer size, you may need to cook in two batches. It’s better to do two rounds than to cram all four fillets in at once and end up with soggy spots.
Related Recipes
- Air Fryer Cajun Cod Fillets
- Air Fryer Cajun Honey Butter Salmon
- Air Fryer Southern Fried Catfish
- Air Fryer Crispy Fish Tacos
- Air Fryer Lemon Garlic Tilapia
Frequently Asked Questions
Can I use frozen mahi mahi fillets in the air fryer?
It’s best to thaw your fillets completely before cooking. Frozen fillets won’t let the blackening spice mixture stick properly, and the outside can overcook while the inside stays underdone.
To thaw quickly, place the sealed fillets in a bowl of cold water for about 30 minutes. Pat them really dry with paper towels before adding the oil and spices so everything adheres nicely.
Air Fryer Blackened Mahi Mahi
- 4 Mahi Mahi Fillets (6 oz each)
- 2 tbsp Olive Oil
- 1 tbsp Paprika
- 1 tsp Garlic Powder
- 1 tsp Onion Powder
- 1 tsp Dried Thyme
- 1/2 tsp Cayenne Pepper
- 1/2 tsp Black Pepper
- 1/2 tsp Salt
- 1 Lime, cut into wedges
- Pat mahi mahi fillets dry and brush both sides with olive oil.
- In a small bowl, combine paprika, garlic powder, onion powder, dried thyme, cayenne pepper, black pepper, and salt.
- Generously coat both sides of each fillet with the blackening spice mixture, pressing to adhere.
- Place fillets in air fryer basket and air fry at 390°F for 10-12 minutes until fish is opaque and flakes easily.
- Serve immediately with lime wedges for squeezing over the top.