Craving a restaurant-worthy meal at home? Blackened mahi mahi is the answer! This dish is bursting with flavor thanks to a smoky spice rub and perfectly cooked fish.
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I recently grabbed a bag of frozen mahi-mahi from Costco, my go-to for quick dinners.
Normally, I whip up a lemon garlic sauce, but this time, I decided to spice things up with a Cajun-inspired blackened fish, paired with delicious Creole rice and a zesty mango and tomato salsa.
And hey, if you're feeling fancy, finish off your meal with some beignets for dessert! Who can resist those fluffy, powdered-sugar delights?
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Why You’ll Love This
- Bursting with Flavor: The Cajun seasoning gives this dish a delicious kick that will have your taste buds dancing.
- Quick Preparation: Perfect for busy weeknights; you can have this on the table in about 20 minutes!
- Healthy and Light: Mahi-mahi is a lean fish, making this a nutritious meal option.
- Customizable: Pair it with your favorite sides or switch up the seasoning for variety.
- Restaurant-Quality Flavor at Home: The vibrant colors of the salsa and rice make this dish look as good as it tastes!
What Does Blackened Mean?
Blackened (pronounced "blak-uhnd") refers to a cooking technique that creates a charred crust on fish or meat. This method originated in Louisiana and is often associated with Cajun cuisine. The technique involves coating the fish in spices and cooking it at high heat in a cast-iron skillet.
The result? A crispy, flavorful crust that locks in moisture, making it a favorite among seafood lovers. Blackened fish has gained popularity in restaurants and homes alike for its bold flavors and satisfying crunch.
Ingredients
We've kept the ingredients list short and sweet so you can whip up this dish in no time.
- Mahi-Mahi: Fresh or frozen fillets work well for this dish, providing a tender, flaky texture.
- Butter: Adds richness and helps achieve that perfect sear.
- Olive Oil: Aids in cooking and adds a subtle flavor.
- Cajun Seasoning: The key ingredient, providing the signature spice blend.
- Smoked Paprika: Adds depth and smokiness to the dish.
- Pepper: Freshly cracked black pepper enhances the overall flavor.
See recipe card for quantities.
Substitution and Addition
- Other Fish: Swap mahi-mahi with salmon or snapper for a different taste.
- Spice Level: Adjust the Cajun seasoning to your heat preference; add cayenne for extra spice.
- Herbs: Fresh parsley or cilantro can be sprinkled on top for added freshness.
- Lemon Juice: A squeeze of lemon brightens the flavors.
How to Cook Blackened Mahi-Mahi
- Prep the Fish: Pat the mahi mahi fillets dry with paper towels. This ensures a nice sear when we cook them.
- Spice Up Your Life! In a shallow dish, combine the Cajun seasoning, smoked paprika, and black pepper. Give it a good mix.
- Coating: Dredge each mahi mahi fillet in the spice mixture, pressing to coat evenly.
- Heat the Skillet: Get your pan nice and hot! Heat the olive oil and butter over high heat in a large cast-iron skillet (or heavy-bottomed pan) until shimmering.
- Blacken It! Carefully add the seasoned fish fillets to the hot pan. Don't overcrowd the pan – cook them in batches if necessary. Sear for 2-3 minutes per side, or until cooked through and the crust is beautifully browned and crispy.
- Serve: Plate your blackened mahi mahi and spoon over any leftover pan drippings. Serve immediately with your favorite sides!
Cajun Seasoning Options
- DIY Cajun Blend: No pre-made mix? No worries! Whip up your own by combining paprika, cayenne pepper, onion powder, garlic powder, thyme, oregano, and black pepper. Adjust the proportions to your desired spice level.
- Store-bought Alternatives: If you don't have Cajun seasoning, other spice blends can work in a pinch. Try Creole seasoning, blackened seasoning (different brand), or even taco seasoning. Just be aware that the flavor profile might differ slightly.
Variation
- Grilled Blackened Mahi-Mahi: Take it outdoors and grill the seasoned fish for a smoky flavor.
- Blackened Salmon: Try another flavor-packed fish that is just as quick and easy.
- Blackened Mahi-Mahi Tacos: Flake the fish and serve it in warm tortillas with avocado and cabbage.
- Coconut-Crusted Mahi-Mahi: Add shredded coconut to the seasoning for a tropical twist.
- Blackened Fish Salad: Serve the fish on a bed of mixed greens with a tangy vinaigrette.
What to Serve With This
- Creole Rice: The perfect side, packed with flavor and complements the blackened fish beautifully.
- Mango and Tomato Salsa: Adds a fresh, zesty contrast to the spicy fish.
- Coleslaw: A crunchy, creamy slaw balances the meal and adds texture.
- Grilled Vegetables: Seasoned grilled veggies make for a colorful and nutritious addition.
- Corn on the Cob: Sweet corn adds a delightful crunch and complements the Cajun spices.
- Creamy Mashed Potatoes: For a comforting option, creamy mashed potatoes offer a rich counterpoint to the blackened fish.
Equipment
Large Cast-Iron Skillet (or heavy-bottomed pan): This is ideal for high-heat searing and achieving that beautiful blackened crust. A heavy-bottomed pan like stainless steel can work in a pinch, but cast iron provides superior heat distribution.
How to Store Leftovers?
Store any leftover blackened mahi-mahi in an airtight container in the refrigerator for up to 2 days. Reheat gently in a skillet or microwave, adding a splash of water or broth to keep it moist.
How to Reheat Mahi-Mahi
Reheat gently on the stovetop with a drizzle of oil or in the oven at low heat to prevent drying. Don't blast it in the microwave! The key is low and slow for perfectly reheated, juicy fish with a crispy crust.
Rose's Top Tip
- Use a cast-iron skillet for even heat distribution and a good sear.
- Don't overcook the fish! It should be opaque and flake easily with a fork.
- Blackening seasoning can produce smoke. Open a window or turn on your fan for ventilation.
Recipe FAQs
Blackened refers to a cooking technique that creates a charred, flavorful crust on the fish, enhancing its taste.
Mahi mahi boasts a mild, slightly sweet flavor with a firm, meaty texture, making it a versatile fish perfect for various preparations.
No, mahi-mahi is not tough; it’s a tender fish that cooks quickly and is easy to flake apart.
Pat the fish dry and coat it evenly with oil before applying the seasoning to help it adhere better.
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Easy Blackened Mahi-Mahi Recipe
Equipment
- 1 cast-iron pan
Ingredients
- 3 mahi-mahi fillet
- ¼ cup olive oil
- 2 tablespoon butter
- 2 teaspoon cajun seasoning
- 1 teaspoon Spanish Smoked Paprika
- ½ teaspoon freshly ground pepper
Instructions
- Prep the Fish: Pat the mahi mahi fillets dry with paper towels. This ensures a nice sear when we cook them.
- Spice Up Your Life! In a shallow dish, combine the Cajun seasoning, smoked paprika, and black pepper. Give it a good mix.
- Coating the Star: Dredge each mahi mahi fillet in the spice mixture, pressing to coat evenly.
- Heat Up the Pan: Get your pan nice and hot! Heat the olive oil and butter over high heat in a large cast-iron skillet (or heavy-bottomed pan) until shimmering.
- Blacken It! Carefully add the seasoned fish fillets to the hot pan. Don't overcrowd the pan – cook them in batches if necessary. Sear for 2-3 minutes per side, or until cooked through and the crust is beautifully browned and crispy.
- Serve and Savor! Plate your blackened mahi mahi and spoon over any leftover pan drippings. Serve immediately with your favorite sides!
Save This Recipe 💌
We'll email this post to you, so you can come back to it later!
Notes
- Use a cast-iron skillet for even heat distribution and a good sear.
- Don't overcook the fish! It should be opaque and flake easily with a fork.
- Blackening seasoning can produce smoke. Open a window or turn on your fan for ventilation.
