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Oven-Baked Blackened Mahi Mahi Recipe

4.6 from 89 reviews

This Oven-Baked Blackened Mahi Mahi recipe offers a flavorful and spicy twist on a classic fish dish, using a blend of aromatic blackening spices and olive oil to create a deliciously seasoned, flaky, and tender fillet. Perfectly baked in the oven, this dish is an easy yet elegant seafood option ideal for quick weeknight dinners or special occasions.

Ingredients

Scale

Fish and Oil

  • 4 Mahi Mahi fillets – thawed
  • 3 Tbsp. olive oil

Blackening Spice Mix

  • 1 tsp. garlic powder
  • 1 tsp. oregano
  • 1/2 tsp. cayenne pepper
  • 1 tsp. smoked paprika
  • 1 tsp. onion powder
  • 1 tsp. cumin
  • 1/2 tsp. black pepper
  • 1/2 tsp. salt

Instructions

  1. Preheat the Oven: Set your oven to 450 degrees Fahrenheit to ensure it reaches the right temperature for baking the fillets perfectly.
  2. Prepare Baking Sheet: Line a sheet pan with aluminum foil for easy cleanup and coat the foil evenly with 3 tablespoons of olive oil to prevent sticking and add flavor.
  3. Place the Mahi Mahi: Lay the thawed mahi mahi fillets carefully onto the olive oil-coated foil, ensuring they are spaced out for even cooking.
  4. Make the Spice Blend: In a small bowl, combine garlic powder, oregano, cayenne pepper, smoked paprika, onion powder, cumin, black pepper, and salt, mixing thoroughly to create the blackening seasoning.
  5. Season the Fish: Generously coat both sides of each Mahi Mahi fillet with the blackening spice mixture, pressing the spices onto the fish to adhere well.
  6. Bake: Place the sheet pan in the preheated oven and bake the fillets for 10 to 12 minutes until the fish flakes easily with a fork and reaches an internal temperature of 137 degrees Fahrenheit.
  7. Serve: Remove the mahi mahi from the oven and serve immediately. Pair with a favorite sauce such as roasted chili aioli or remoulade for added flavor.

Notes

  • Ensure the mahi mahi is fully thawed for even cooking.
  • Adjust cayenne pepper to taste for milder or spicier flavor.
  • Use a meat thermometer for accurate internal temperature to avoid overcooking.
  • Leftover fish can be refrigerated and enjoyed cold or reheated gently.
  • Perfect served with steamed vegetables, rice, or a fresh salad.

Keywords: Mahi Mahi, Blackened Fish, Oven-Baked Fish, Seafood Recipe, Spicy Fish, Easy Dinner