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Perfectly blackened grouper fillets with a crispy, seasoned crust, garnished with fresh cilantro and served with lime and lemon wedges.

How to Make the Perfect Blackened Grouper: A Step-by-Step Guide with Pro Tips


  • Author: Nova
  • Total Time: 15 minutes
  • Yield: 2 servings 1x
  • Diet: Gluten Free

Ingredients

Scale

For the Blackening Seasoning:

  • 2 tbsp paprika (regular or smoked for extra depth)
  • 1 tsp cayenne pepper (adjust for spice level)
  • 1 tsp black pepper
  • Garlic powder (1 tsp)
  • 1 tsp onion powder
  • 1 tsp dried oregano
  • Dried thyme (1 tsp)
  • 1 tsp salt

For the Grouper:

  • 2 fresh grouper fillets (68 oz each)
  • 2 tbsp unsalted butter (melted)
  • 1 tbsp high-heat oil (avocado or vegetable oil)
  • Lemon wedges (for serving)
  • Fresh cilantro or parsley (for garnish)

Instructions

1: Prepare the Grouper

Pat the fillets dry with a paper towel to remove excess moisture—this helps the seasoning stick and ensures a crispier crust.

Brush each fillet with melted butter on both sides. This adds richness and helps the blackening seasoning adhere.

Generously coat the fish with the blackening seasoning mix, pressing it onto the fillets for even coverage.

2: Preheat the Skillet

Heat a cast-iron skillet over medium-high heat for 5 minutes until it’s smoking hot. This high heat is key for achieving that signature blackened crust.

Add 1 tbsp of oil and 1 tbsp of butter to the pan—this creates the sizzling base for a perfect sear.

3: Cook the Blackened Grouper

Carefully place the fillets in the skillet and cook undisturbed for 2-3 minutes. The seasoning will start to form a dark, flavorful crust.

 Flip the fillets gently using a fish spatula and cook for another 2-3 minutes on the other side. The fish should be opaque, flaky, and golden brown.

If your fillets are extra thick, lower the heat slightly and cook for an additional 1-2 minutes to ensure the center is fully done.

4: Serve and Garnish

Transfer the fillets to a plate and let them rest for 2 minutes before serving.

Squeeze fresh lemon juice over the fish for brightness and balance.

Garnish with chopped cilantro or parsley for a pop of freshness.

Serve with your favorite sides like coleslaw, grilled vegetables, or Cajun rice for a complete meal!

  • Prep Time: 5 minutes
  • Cook Time: 6-8 minutes
  • Category: Dinner
  • Method: Pan-searing (Blackening)
  • Cuisine: Cajun / Creole

Nutrition

  • Serving Size: 1 blackened grouper fillet (~6 oz)
  • Calories: ~280 kcal
  • Sugar: 0g
  • Sodium: ~600mg (varies based on seasoning)
  • Fat: ~12g
  • Saturated Fat: ~4.5g
  • Unsaturated Fat: ~6.5g
  • Trans Fat: 0g
  • Carbohydrates: ~2g (from seasoning)
  • Fiber: ~1g
  • Protein: ~38g
  • Cholesterol: ~85mg

Keywords: Blackened fish recipe, Cajun seasoning, Cast-iron skillet cooking, Grilled grouper