Blackened Mahi Mahi

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Blackened Mahi Mahi (Quick & Flavorful 15-Minute Dinner)

Blackened Mahi Mahi is a simple and delicious Southern-inspired dish made with a homemade Cajun spice blend and seared to perfection in just 15 minutes. This protein-packed meal is perfect for busy weeknights, and pairs beautifully with rice, roasted vegetables, or fresh salsa.

 Prep Time: 10 minutes

 Cook Time: 5 minutes

 Total Time: 15 minutes

 Servings: 2

Ingredients

For the Blackened Spice Mix:

  • ¾ teaspoon onion powder
  • ½ teaspoon coconut sugar or brown sugar (optional, for deeper color)
  • ½ teaspoon smoked paprika
  • ½ teaspoon chili powder
  • ½ teaspoon garlic powder
  • ½ teaspoon dried basil
  • ½ teaspoon dried thyme
  • Salt and freshly cracked black pepper, to taste

For the Mahi Mahi:

  • 2 mahi mahi fillets (about 6 oz each)
  • 1 tablespoon olive oil
  • Lemon wedges, for serving

Instructions

1. Prepare the Blackened Seasoning

In a small bowl, mix together the onion powder, sugar (if using), paprika, chili powder, garlic powder, basil, thyme, salt, and black pepper.

2. Season the Fish

Pat the mahi mahi fillets dry with a paper towel. Season both sides with salt and pepper, then coat evenly with the spice mix.

3. Sear the Mahi Mahi

Heat olive oil in a large skillet over medium-high heat. Once hot, place the fillets in the skillet and sear for 2–3 minutes per side, or until the internal temperature reaches 130–137°F (54–58°C). The fish should be opaque and flake easily with a fork.

4. Serve

Remove from the skillet and let rest for 2–3 minutes. Serve warm with a squeeze of lemon juice and your choice of side dishes.

 Serving Suggestions

  • Serve over jasmine or basmati rice, or cauliflower rice for a low-carb option.
  • Top with mango salsa or avocado lime dressing.
  • Flake into tacos with shredded slaw and mango guacamole.
  • Add to a grain bowl or salad for a flavorful protein boost.

Substitutions & Tips

  • Can’t find mahi mahi? Try halibut, cod, or tilapia—adjust cook time based on thickness.
  • For more heat, add a pinch of cayenne pepper to the spice blend.
  • For a more authentic “blackened” finish, use butter instead of olive oil.
  • Air Fryer Option: Preheat to 400°F and cook fillets for about 8 minutes.

Storage & Reheating

  • Store leftovers in an airtight container in the refrigerator for up to 3 days.
  • To reheat: Cover loosely with foil and warm in a 275°F oven until heated through.

Nutrition Information (Per Serving)

  • Calories: 219
  • Protein: 32g
  • Carbs: 3g
  • Fat: 8g
  • Fiber: 1g
  • Sugar: 1g
  • Cholesterol: 124mg
  • Sodium: 162mg

Note: Nutrition info is approximate and may vary depending on ingredients used.

 

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