Blackened Mahi Mahi with Avocado Cream Sauce

Blackened Mahi Mahi with Avocado Cream Sauce

Servings

4

Prep Time

10 minutes

Cook Time

10 minutes

Calories

385

Cuisine

American

Category

Main Course

If you're looking to spice up your seafood game, Blackened Mahi Mahi with Avocado Cream Sauce is a must-try dish that balances bold Cajun flavors with smooth, creamy coolness. 


The mahi mahi fillets are coated in a smoky, zesty blend of herbs and spices before getting seared to crispy perfection in a hot cast iron skillet. That signature blackened crust locks in all the juicy goodness, while the avocado cream provides the perfect mellow counterpoint. 


It’s a meal that’s not only restaurant-worthy, but incredibly easy to prepare in your own kitchen.


This dish hits all the right notes—crispy, flaky, spicy, and creamy. With only 20 minutes from start to finish, it’s perfect for weeknight dinners or even a special seafood night. 


The avocado cream sauce brings brightness and smoothness with lime juice and cilantro to lift the richness of the fish. 


Serve it with rice, roasted veggies, or a fresh salad to complete the meal. It's naturally gluten-free, low in carbs, and packed with healthy fats and protein. 


This recipe is guaranteed to be a crowd-pleaser for seafood lovers and spice enthusiasts alike.


Blackened Mahi Mahi with Avocado Cream Sauce

Ingredients

  • 4 mahi mahi fillets (6 oz each)

  • 2 tablespoons olive oil

  • 1 tablespoon smoked paprika

  • 1 teaspoon garlic powder

  • 1 teaspoon onion powder

  • 1 teaspoon dried thyme

  • 1 teaspoon dried oregano

  • 1/2 teaspoon cayenne pepper

  • 1/2 teaspoon salt

  • 1/2 teaspoon black pepper

  • 2 ripe avocados

  • 1/2 cup sour cream

  • 2 tablespoons fresh lime juice

  • 1 clove garlic, minced

  • 2 tablespoons fresh cilantro, chopped

  • Salt and pepper, to taste

Directions

  1. In a small bowl, mix together smoked paprika, garlic powder, onion powder, thyme, oregano, cayenne, salt, and black pepper.

  2. Pat mahi mahi fillets dry with paper towels and coat each with olive oil. Rub the spice mix evenly over both sides of the fillets.

  3. Heat a large cast iron skillet over medium-high heat. Once hot, place the fillets in the skillet and sear for 3–4 minutes per side until blackened and cooked through. Remove from heat and set aside.

  4. In a blender or food processor, combine the avocados, sour cream, lime juice, minced garlic, and cilantro. Blend until smooth and creamy. Season with salt and pepper to taste.

  5. Serve the blackened mahi mahi fillets drizzled with avocado cream sauce and extra cilantro if desired.

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Tips for cooking this Mahi Mahi dish to perfection:

  1. Pat the fish dry before seasoning to help the spices adhere better and to ensure a good sear.  
  2. Use a cast iron skillet for the best blackened crust and even heat distribution.  
  3. Don’t overcrowd the pan; cook fillets in batches if necessary.  
  4. Preheat the skillet properly before adding the fish for maximum char.  
  5. Use ripe avocados for the smoothest cream sauce.  
    Blend avocado cream right before serving to maintain its vibrant color.  
  6. Add a touch of lime zest to the avocado sauce for extra brightness.  
  7. Let the fish rest for a few minutes after cooking to keep it moist.  
  8. Store extra avocado cream in an airtight container with plastic wrap pressed against the surface to prevent browning.  
  9. Serve the sauce chilled or at room temperature for best contrast with the hot fish.  

Serve Blackened Mahi Mahi with Avocado Cream Sauce alongside: 

  • Cilantro lime rice  
  • Grilled or roasted corn on the cob  
  • Garlic butter asparagus  
  • Mango salsa  
  • A light cucumber and tomato salad  
  • Quinoa pilaf with black beans  
  • Roasted sweet potatoes  
  • Warm flour or corn tortillas  
  • Chilled white wine like Sauvignon Blanc or Pinot Grigio  


FAQ'S

Q: Can I make the Avocado cream sauce ahead of time:
A: Yes, but to prevent browning, store it in an airtight container with plastic wrap directly on the surface. Use within 24 hours.  

Q: Can I use frozen mahi mahi fillets?  
A: Absolutely. Thaw them fully in the fridge and pat them dry before seasoning and cooking.  

Q: Is this recipe spicy?  
A: It has a moderate spice level. You can adjust the cayenne pepper to make it milder or spicier to your taste.  

Q: Can I grill the mahi mahi instead of using a skillet?  
A: Yes! Grilling works well—just make sure the grill grates are clean and oiled to prevent sticking.  

Q: What can I use instead of sour cream in the avocado sauce? 
A: You can substitute plain Greek yogurt or a dairy-free alternative like coconut yogurt.  

Q: How do I know when mahi mahi is done cooking?  
A: The fish should be opaque and flake easily with a fork. Internal temperature should reach 137–145°F.  

Q: Is this dish keto-friendly?  
A: Yes, it's low in carbs and fits into a keto diet when paired with low-carb sides.  

Q: Can I use a different type of fish?  
A: Sure! Try it with snapper, cod, halibut, or tilapia using the same blackening spice rub.  

Q: What if I don’t have a blender for the sauce?  
A: You can mash the avocado by hand and mix vigorously with the other ingredients until creamy.  

Q: Can I make this dish dairy-free?  
A: Yes! Just use a plant-based sour cream or yogurt alternative for the avocado cream sauce.  

Chef's Recommendation

"A sharp knife is your best friend in the kitchen. For recipes like this, I always reach for my Chikashi chef knife - it gives me the control and precision I need for perfect results every time."
Chef's Note: A sharp knife not only makes prep work faster but also safer - dull knives require more pressure and are more likely to slip.

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