If you’re craving a dish that’s fiery, full of flavour, and easy to prepare, this Cajun Blackened Fish recipe is exactly what you need. Originating from Louisiana, blackened fish gets its deep, smoky flavour from a blend of bold spices seared at high heat, forming a rich crust without being greasy.
Perfect for weeknight dinners, weekend grilling, or even fish tacos, this dish is ready in under 20 minutes and tastes like it came straight out of a New Orleans kitchen!
🛒 Ingredients You’ll Need
For the Fish:
- 4 white fish fillets (tilapia, catfish, cod, mahi-mahi, or snapper)
- 2 tbsp melted butter or olive oil (for brushing)
Cajun Blackening Spice Mix:
- 1 tsp paprika (smoked preferred)
- 1 tsp garlic powder
- 1 tsp onion powder
- 1 tsp dried thyme
- ½ tsp cayenne pepper (adjust to taste)
- ½ tsp black pepper
- ½ tsp salt
- ½ tsp oregano
🔪 Step-by-Step Instructions
Step 1: Prepare the Spice Mix
In a small bowl, combine all the spices listed above. This will be your homemade Cajun blackening seasoning.
✅ SEO Tip: Including “homemade Cajun seasoning” helps attract spice blend searches too.
Step 2: Season the Fish
Pat the fish fillets dry with paper towels. Brush both sides with melted butter or olive oil. Rub the Cajun seasoning generously on both sides of each fillet.
Step 3: Heat the Pan
Place a cast iron skillet or heavy pan over medium-high heat and let it get very hot (almost smoking). This is key to achieving the charred blackening effect.
⚠️ Caution: Turn on the exhaust fan—this will smoke a little!
Step 4: Cook the Fish
- Add the fish to the hot skillet.
- Cook for 2–3 minutes on each side, depending on thickness.
- Do not move the fish around—let it sear and form a crust.
The fish is done when it flakes easily with a fork and has a blackened outer crust.
🔥 Why Is It Called “Blackened”?
The term “blackened” refers to the charred crust formed when spices are seared at high heat. It doesn’t mean the fish is burnt—it’s a deep, savoury layer of flavour that balances heat with smokiness.
🐟 Best Fish for Blackening
You want firm, flaky white fish that holds up well to high heat. Great options include:
- Catfish (Southern classic!)
- Tilapia
- Cod
- Mahi-mahi
- Snapper
- Halibut
Avoid delicate fish like sole or oily fish like sardines.
🧾 Nutritional Info (Per Serving)
- Calories: 220
- Protein: 26g
- Fat: 12g
- Carbs: 1g
- Fiber: 0g
- Sugar: 0g
Note: These values may vary based on fish type and cooking oil.
🧂 Cajun Blackening Seasoning – Make & Store
Bonus Tip: Make a big batch of the seasoning and store in an airtight jar for up to 3 months. Use it on chicken, shrimp, tofu, or even grilled veggies.
This Cajun Blackened Fish Recipe is a quick, fiery, and flavour-loaded dish that brings the spirit of Louisiana to your dinner table. With just a handful of spices and a sizzling skillet, you can whip up restaurant-style blackened fish at home in minutes.
Whether served over rice, in tacos, or on its own, this dish will become a family favourite. So heat up that pan and let the blackening begin!
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Frequently Asked Questions
Is blackened fish burnt?
No. The dark crust comes from the spices toasting in a very hot pan, not from burning the fish. Cook it just long enough for the crust to form and the fish to flake.
What pan is best for blackening?
A heavy cast iron skillet holds high heat well. Turn on your extractor fan, because the spices create a lot of smoke.
Which fish should I use?
Firm fish such as catfish, redfish, snapper, tilapia or salmon fillets work well because they hold up to high heat.
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