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blackened mahi-mahi fish tacos topped with red cabbage slaw, cream, and jalapeños
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5 from 21 votes

Blackened Mahi-Mahi Fish Tacos {Easy, 30-minute Meal}

This Blackened Mahi-Mahi Fish Taco recipe comes together in less than 30 minutes, making it a perfect quick weeknight meal! The Blackened Mahi-Mahi tacos can be topped with an easy red cabbage slaw, and other customizable toppings.
Prep Time20 minutes
Cook Time10 minutes
Total Time30 minutes
Course: Main Course
Cuisine: Cajun
Keyword: fish, tacos
Servings: 8 -10 tacos
Calories: 135kcal

Ingredients

For the Blackened Fish:

  • 12 oz. Mahi-Mahi or other firm-fleshed fish (about 3 fillets)
  • 1 ½ tablespoon Blackened Seasoning homemade, or store-bought
  • 1 tablespoon oil (I used canola oil)
  • 1 tablespoon unsalted butter

For the Slaw:

  • 2 cups red cabbage shredded
  • ½ cup white onion thinly sliced
  • ¼ cup fresh cilantro chopped
  • ¼ teaspoon salt
  • ½ of one lime juiced

Additional:

  • 8-10 corn tortillas or flour (taco-sized) tortillas

Optional Toppings:

Instructions

  • In a large bowl, mix together all of the slaw ingredients. Set aside.
  • Use paper towels to pat dry the fish fillets.
  • Use half of the blackened seasoning to pour over the top of the fillets, rub the seasoning on so it sticks well. Flip over, and repeat on the other side of the fillets with the remaining seasoning.
  • In a large skillet (preferably cast-iron), heat one tablespoon of oil on medium-high heat. Allow the pan to get really hot.
  • Melt the butter in the pan, then immediately add the seasoned fish fillets, pressing the top of each one down with a spatula.
  • Cook the fillets, flipping only once until “blackened” or charred, about 3 minutes per side.
  • Let cool a few minutes, then cut the fillets into desired pieces, and serve on warmed tortillas.
  • Top with red cabbage slaw, and customize with optional toppings!

Video

Notes

(Nutritional Info is for 1 taco if you make 8 tacos, and divide the slaw evenly between the tacos.) 

Nutrition

Serving: 1taco | Calories: 135kcal | Carbohydrates: 12.8g | Protein: 11.5g | Fat: 4.5g | Saturated Fat: 1.2g | Polyunsaturated Fat: 0.5g | Monounsaturated Fat: 1.3g | Cholesterol: 44.6mg | Sodium: 134.3mg | Potassium: 286mg | Fiber: 2.2g | Sugar: 2.3g | Vitamin A: 10IU | Vitamin C: 23.4mg | Calcium: 2.7mg | Iron: 6.2mg