If you’re craving a dish that bursts with bold flavors and has just the right amount of heat, you absolutely need to try this Cajun Blackened Fish Recipe. It’s my go-to when I want something quick, easy, and insanely delicious. The beautiful blackened crust that forms on the fish fillets locks in all the spices and juiciness, delivering a mouthwatering combination of smoky, spicy, and savory notes that dance on your tongue. Whether you’re cooking weeknight dinner or impressing guests, this recipe hits all the right spots with minimal fuss.

Ingredients You’ll Need
Nothing complicated here—just a handful of spices and fresh fish, each playing a vital role in creating that signature Cajun flavor and that irresistible blackened crust.
- Paprika: Adds rich color and a sweet smoky flavor that’s essential for authentic Cajun seasoning.
- Ground cumin: Brings earthy warmth and depth to the spice mix.
- Onion powder: Provides a subtle sharpness that rounds out the seasoning.
- Garlic powder: Enhances that savory punch without overpowering the dish.
- Dried thyme: Gives a hint of herbal brightness and complexity.
- Dry mustard: Offers a mellow heat and slight tang that lifts the flavors.
- Salt: Balances all the spices and enhances the natural flavor of the fish.
- Cayenne pepper: Adds just the right kick of heat—adjust to taste!
- Freshly ground black pepper: Adds sharpness and piquancy, perfect with the smoky rub.
- Firm white fish fillets: Such as cod, haddock, or tilapia; they hold the rub beautifully and cook quickly.
- Extra virgin olive oil: For searing the fish and creating that irresistible charred crust.
How to Make Cajun Blackened Fish Recipe
Step 1: Mix the Cajun Spice Blend
Take all your dry spices and mix them well in a shallow dish. This blend is the magic behind that bold, smoky blackened flavor. Mixing thoroughly helps ensure every bite of fish is evenly flavored and perfectly seasoned.
Step 2: Coat the Fish Fillets
Generously coat both sides of your fish fillets with the spice mix. Press the seasoning into the flesh gently and shake off any excess. This step sets the foundation for the blackened crust that’s so iconic in this Cajun Blackened Fish Recipe.
Step 3: Heat Your Skillet
Pour your extra virgin olive oil into a heavy skillet and heat it over medium-high heat. You want it nice and hot so the spices sizzle on contact, forming that irresistible dark crust rather than stewing the fish.
Step 4: Sear the Fish
Place the fillets in the hot pan. Cook undisturbed until the rub chars and turns black—this usually takes around 2–3 minutes per side. Then flip and repeat on the other side until the fish flakes easily and reaches your preferred doneness. The contrast between the smoky exterior and tender interior is pure joy.
Step 5: Serve Immediately
There’s nothing better than serving blackened fish steaming hot right off the pan to enjoy that crunch and vibrant spice. Trust me, that first bite will be unforgettable!
How to Serve Cajun Blackened Fish Recipe

Garnishes
Keep it simple and fresh with lemon wedges and a sprinkle of chopped parsley or green onions. The citrus adds a bright, tangy lift that perfectly cuts through the smoky, spicy richness of the blackened fish.
Side Dishes
This Cajun Blackened Fish Recipe pairs beautifully with buttery corn rice salad for a touch of sweetness and creaminess, or serve with a crisp green salad or roasted vegetables for a lighter option. Whatever you choose, balance the bold fish with fresh and vibrant sides.
Creative Ways to Present
Try serving your blackened fish tacos with creamy slaw and avocado for a fun twist. Or flake the cooked fish into a hearty Cajun-style pasta with peppers and onions for a comforting meal. This recipe’s smoky flavor works wonderfully in so many dishes beyond just the pan.
Make Ahead and Storage
Storing Leftovers
If you have any leftovers, cool them completely before placing in an airtight container in the refrigerator. They will stay fresh and flavorful for up to 2 days, though the crust may soften a bit.
Freezing
Although fresh is best for this Cajun Blackened Fish Recipe, you can freeze cooked fillets wrapped tightly in foil and stored in a freezer bag for up to one month. Keep in mind the texture will change slightly once thawed.
Reheating
To enjoy your leftovers, reheat gently in a skillet over medium heat to help maintain the crispy crust. Avoid microwaving if you want to keep that delicious blackened texture intact.
FAQs
What type of fish works best for this Cajun Blackened Fish Recipe?
Firm white fish like cod, haddock, or tilapia are ideal because they hold up well to the high heat and the seasoning rub without falling apart.
Can I adjust the spice level?
Absolutely! If you prefer milder food, reduce or omit the cayenne pepper. For an extra kick, add a bit more or sprinkle crushed red pepper on top when serving.
Is it necessary to use a heavy skillet?
Yes, a heavy skillet like cast iron distributes heat evenly and helps create the perfect blackened crust without burning the fish.
Can I make this Cajun Blackened Fish Recipe gluten-free?
Definitely. The spice rub is naturally gluten-free, and as long as your fish and oil are pure, this recipe is safe for gluten-free diets.
What’s the best way to tell when the fish is cooked?
The fish is done when it flakes easily with a fork and is opaque all the way through. Cooking times may vary slightly depending on the thickness of the fillets.
Final Thoughts
There is something incredibly satisfying about the bold spice and irresistible crust of this Cajun Blackened Fish Recipe. It’s a simple dish that feels special every time you make it, perfect for sharing with loved ones or treating yourself on a busy evening. Give it a try—you might just have found your new favorite way to enjoy fish!
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Cajun Blackened Fish Recipe
- Prep Time: 5 minutes
- Cook Time: 5 minutes
- Total Time: 10 minutes
- Yield: 4 servings
- Category: Main Course
- Method: Frying
- Cuisine: Cajun
Description
This Cajun Blackened Fish recipe features firm white fish fillets coated in a bold and spicy Cajun seasoning blend, then cooked in a hot skillet until the rub forms a flavorful, slightly charred crust. Ready in just 10 minutes, this dish is perfect for a quick and delicious dinner with a smoky, spicy kick.
Ingredients
Spice Mix
- 1 tbsp paprika
- 1 tsp ground cumin
- 1 tsp onion powder
- 1 tsp garlic powder
- 1 tsp dried thyme
- 1 tsp dry mustard
- 3/4 tsp table salt
- 1/8 tsp cayenne pepper (or to taste)
- Good grind of black pepper
Main
- 4 firm white fish fillets (about 150g/5oz each)
- 2 tbsp extra virgin olive oil
Instructions
- Mix the Spice Blend: In a shallow dish, combine paprika, ground cumin, onion powder, garlic powder, dried thyme, dry mustard, salt, cayenne pepper, and black pepper. Mix thoroughly to create an even seasoning blend.
- Coat the Fish: Pat the fish fillets dry with paper towels. Coat both sides of each fillet evenly with the spice mix, shaking off any excess to avoid clumps.
- Heat the Skillet: Place a large, heavy-based skillet over medium-high heat. Pour in the extra virgin olive oil and let it heat until shimmering but not smoking.
- Cook the Fish: Add the seasoned fish fillets to the hot skillet. Cook without moving until the spice rub darkens and blackens on the bottom side, about 2-3 minutes. Carefully flip the fillets and continue cooking the other side until the fish is opaque and flakes easily with a fork, approximately another 2-3 minutes depending on thickness.
- Serve Immediately: Remove the fish from the skillet and serve at once. It pairs beautifully with buttery corn rice salad or your choice of side dish.
Notes
- Note 1: Choose firm white fish fillets such as catfish, snapper, cod, or tilapia for best results.
- Note 2: Cooking time may vary depending on fillet thickness; ensure fish is cooked through but not overdone.
- For a complete meal, serve with a buttery Corn Rice Salad (not included here).
- You can adjust the cayenne pepper amount to control the heat level.

