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Blackened Cod Fish Tacos with Chipotle Aioli

These blackened cod fish tacos deliver bold, restaurant-quality flavor with flaky, marinated cod, creamy chipotle aioli, and fresh toppings. A perfect weeknight meal that's both easy and impressive.
Prep Time 10 minutes
Cook Time 15 minutes
Total Time 25 minutes
Course Dinner, Main Course
Cuisine American, Mexican
Servings 4
Calories 350 kcal

Ingredients
  

  • For the Fish:
  • 1 lb cod fish – fresh or thawed cut into portions
  • 1 tbsp oil for cooking – for the pan
  • 1 tbsp butter – adds richness and prevents sticking
  • For the Marinade:
  • 2 tbsp sunflower oil – or any neutral oil
  • 1 whole lime – juiced and zested
  • 1 tsp blackening seasoning – not regular chili powder
  • 1 pinch kosher salt – enhances flavor
  • For the Chipotle Aioli:
  • 1 tbsp apple cider vinegar
  • ¾ tsp chipotle powder – not chili powder
  • ½ tsp ground cumin
  • ½ tsp salt – or to taste
  • tsp dried oregano
  • tsp garlic powder – not fresh garlic
  • ½ cup mayonnaise – quality brand preferred
  • 1 tbsp dijon mustard – adds depth
  • 1 tbsp lime juice – fresh squeezed
  • For Assembly:
  • 16 corn tortillas – small size preferred
  • 2 cups cabbage – thinly sliced
  • Fresh cilantro – to taste chopped
  • Pico de gallo – as needed homemade or store-bought
  • 2 –3 limes – cut into wedges for serving

Instructions
 

  • Marinate the Fish:
  • Combine sunflower oil, lime juice and zest, blackening seasoning, and kosher salt in a shallow dish. Coat the cod pieces evenly and refrigerate for 30 minutes, flipping once halfway through.
  • Make the Chipotle Aioli:
  • In a bowl, whisk together apple cider vinegar, chipotle powder, cumin, salt, oregano, and garlic powder. Add mayonnaise, dijon mustard, and lime juice. Mix until smooth. Taste and adjust as needed.
  • Cook the Cod:
  • Heat a heavy skillet (preferably cast iron) over medium-high heat. Add oil and butter. When hot, place marinated cod in the pan without overcrowding. Cook undisturbed for 3–4 minutes until a golden crust forms. Flip and cook another 2–3 minutes until opaque and cooked through.
  • Warm the Tortillas:
  • Heat corn tortillas over a gas flame or in a dry skillet until lightly charred and pliable. Keep warm wrapped in a clean towel.
  • Assemble the Tacos:
  • Start with warm tortillas. Add cabbage, then flaked cod. Drizzle with chipotle aioli. Top with pico de gallo and chopped cilantro. Serve with lime wedges.

Notes

Fish Alternatives: Mahi mahi, halibut, or tilapia can be used in place of cod.
Make-Ahead Tip: Chipotle aioli can be made up to 3 days in advance.
Dairy-Free Option: Use oil instead of butter and vegan mayo for aioli.
Homemade Blackening Seasoning: Mix paprika, cayenne, garlic powder, onion powder, thyme, and oregano if store-bought isn't available.
Storage: Store cooked fish and toppings separately. Reheat fish gently in a skillet.
Serving Ideas: Pair with Mexican rice, beans, or avocado salad. Great for taco bars!
Keyword blackened cod, fish tacos