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Keto Cajun-Spiced Mahi Mahi Recipe

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This Keto Cajun-Spiced Mahi Mahi is a quick and flavorful low-carb meal! Juicy Mahi Mahi fillets are coated in a bold Cajun spice mix, seared in butter, and finished with garlic and lemon juice for extra flavor. It’s an easy weeknight dinner that’s keto-friendly, high in protein, and full of smoky heat. Serve it with zucchini noodles, cauliflower rice, or a fresh avocado salad for a perfect meal.

Ingredients

Scale

For the Fish:

  • 2 Mahi Mahi fillets (about 6 oz each)
  • 2 tbsp butter
  • 1 tbsp olive oil
  • 1 tbsp Cajun seasoning (homemade or store-bought)
  • ½ tsp salt (if needed)
  • ½ tsp black pepper
  • 1 tbsp lemon juice
  • 1 tsp minced garlic

For the Side (Optional):

  • 1 cup zucchini noodles or sautéed spinach
  • 1 tbsp butter
  • ¼ tsp salt
  • ¼ tsp black pepper

Instructions

Instructions

  1. Prepare the Fish:

    • Pat the Mahi Mahi fillets dry with paper towels to remove moisture.
    • Season both sides with Cajun seasoning, salt, and black pepper, pressing the seasoning into the fish.

  2. Heat the Pan:

    • Heat 1 tbsp olive oil in a large skillet over medium-high heat.
    • Add 1 tbsp butter and let it melt, coating the pan evenly.

  3. Cook the Fish:

    • Place the fillets in the hot pan and cook for 3-4 minutes until golden brown.
    • Flip the fish and add 1 tsp minced garlic and 1 tbsp lemon juice to the pan.
    • Cook for another 3-4 minutes, spooning the buttery sauce over the fillets.
    • Remove from heat once the fish is flaky and cooked through (internal temp: 137°F-145°F).

  4. Make the Side (Optional):

    • In the same pan, add 1 tbsp butter and toss in the zucchini noodles or spinach.
    • Sprinkle with salt and black pepper, then sauté for 2-3 minutes until tender.

  5. Serve:

    • Place the Mahi Mahi on a plate with the veggie side and drizzle any extra butter sauce over the top.

Notes

  • Adjust the Cajun seasoning if you prefer a milder or spicier taste.
  • Use fresh Mahi Mahi for the best flavor, but frozen fillets work too (just thaw completely).
  • For extra crispiness, lightly coat the fish in almond flour before cooking.
  • Pairs well with cauliflower rice, roasted asparagus, or a fresh avocado salad.

Nutrition

Find it online: https://www.wellnesswarrior.org/keto-cajun-spiced-mahi-mahi/