Blackened Salmon Recipe: Spicy Cajun Pan-Seared Fillets

These Blackened Salmon fillets use a homemade Cajun spice blend that forms a flavorful, slightly spicy crust while keeping the fish moist and flaky. The recipe explains a simple searing technique in a hot skillet to develop a perfect crust and tender interior.

If you enjoy salmon, try recipes such as Salmon Patties, Fettuccine with Salmon Dill Cream Sauce, or Air Fryer Salmon and Asparagus.

The spice mix begins with a classic Cajun seasoning base plus a touch of brown sugar. The sugar helps the seasoning caramelize during the blackening process, creating a nicely sealed crust and rich flavor.

Why I love this recipe

• Quick and easy for weeknights—salmon cooks rapidly and requires minimal hands-on time
• Homemade blackening seasoning built from common pantry spices for bold, fresh flavor

Ingredients needed

For the main ingredients: fresh salmon fillets (skin on; previously frozen is fine), melted butter, olive oil, salt, and freshly ground black pepper.

For the blackening seasoning: smoked paprika, brown sugar, garlic powder, onion powder, cayenne pepper, dried oregano, and dried thyme.

How to make Blackened Salmon

Prep the salmon

Combine all the spice-rub ingredients in a small bowl and mix thoroughly. Pat the salmon fillets dry and brush the flesh side with melted butter, reserving any extra butter for serving.

Spoon the blackening spices onto the buttered side of the salmon and gently press to help the rub adhere and form a crust.

Cook the salmon

Heat a large heavy-bottomed or cast-iron skillet over medium-high heat until very hot (an induction burner set around 8 of 10 works well). Add the olive oil and any reserved butter to the pan.

Place the fillets seasoning-side down with the skin side up into the hot, oiled skillet. Let them cook undisturbed until a golden to dark brown crust forms—peek gently to check doneness rather than moving them around.

When ready to flip, lift the fillets with a fish spatula and transfer them to a plate, skin side down. Use a rubber spatula to scrape any seasoned butter into a small dish—reserve this to spoon over the salmon when serving. Return the skillet to the heat and place the fillets back in, skin side down. Continue cooking until the internal temperature reaches 125°F for a tender, slightly pink center.

The skin should stick to the pan; use a spatula to lift the fillet when serving. Spoon additional melted butter over the fish if you like and finish with a generous squeeze of lemon.

How to serve Blackened Salmon

This dish is excellent for weeknights served over mashed potatoes with lemon. You can also swap potatoes for steamed brown rice or cauliflower rice.

Blackened salmon makes great tacos topped with shredded cabbage, mango salsa, and a squeeze of lime. Leftovers are superb cold on a big green salad for a quick, flavorful lunch.

Recipe Tips

• Spice level – Adjust the cayenne to taste. Reduce it for those sensitive to heat or increase it if you prefer a spicier finish.
• Trust your thermometer – Filet size and starting temperature affect cooking time. High heat can overcook salmon quickly, so flip when the crust forms and remove when the center reaches the target temperature.
• Wild-caught salmon – Choose bright orange wild-caught salmon if possible; it often has better flavor and texture than farmed varieties.

Storage and reheating

Store leftovers in an airtight container in the refrigerator and consume within 3–5 days. Rather than reheating, enjoy leftover blackened salmon cold on a salad for best texture and flavor.

Cajun inspired recipes

If you like blackened salmon, consider trying other Cajun-inspired dishes such as creamy shrimp pasta, crawfish étouffée, blackened chicken Alfredo, crab cakes with remoulade, or shrimp and cheesy grits.