Pan-Seared Cajun Salmon

Salmon fillets coated in a proper Cajun spice blend, then seared hard in a hot pan for a smoky, blackened crust and buttery, flaky middle. It's a fast, big-flavoured midweek main that leans on Louisiana warmth rather than heat alone.

Cajun cooking is all about layered, toasty spice rather than raw chilli burn, and salmon takes to it beautifully. A quick homemade rub of paprika, garlic, herbs and a whisper of cayenne caramelises against the hot pan into a smoky crust, while the fish stays soft and buttery inside. Ten minutes of prep, one pan, dinner sorted.

Ingredients

• 4 fillets skin-on salmon fillets — about 130g each, patted very dry
• 2 tsp smoked paprika
• 1 tsp sweet paprika
• 1 tsp garlic granules
• 1 tsp onion granules
• 1 tsp dried oregano
• 1 tsp dried thyme
• 0.5 tsp cayenne pepper — use 0.25 tsp for milder
• 0.5 tsp freshly ground black pepper
• 0.75 tsp fine sea salt
• 1 tbsp olive oil
• 20 g unsalted butter
• 1 lemon — half juiced, half in wedges to serve
• 2 tbsp fresh parsley — roughly chopped, to finish

Method

1. In a small bowl, mix the smoked paprika, sweet paprika, garlic and onion granules, oregano, thyme, cayenne, black pepper and salt into an even Cajun rub.
2. Pat the salmon fillets thoroughly dry with kitchen paper, then rub the spice mix all over the flesh and skin, pressing it on so it clings in a solid coat.
3. Set a large heavy frying pan over a medium-high heat and add the olive oil. Let it get properly hot and shimmering before the fish goes in, so the crust sears rather than steams.
4. Lay the fillets in skin-side down, pressing gently for a few seconds so the skin stays flat. Cook undisturbed for 4-5 minutes until the skin is crisp and the flesh has turned opaque up the sides.
5. Flip carefully and add the butter to the pan. As it foams, tilt the pan and spoon the spiced butter over the fillets for 2-3 minutes to baste.
6. The salmon is ready when it flakes easily with a fork and is cooked through with no translucent pink in the centre. Thicker fillets may need an extra minute.
7. Squeeze over the lemon juice, scatter with parsley and let it rest for a minute off the heat. Serve with lemon wedges alongside.

Serve it with

• Buttery Cajun dirty rice
• Charred sweetcorn cobs
• Crushed new potatoes
• A crisp green salad with lemon dressing
• Garlicky wilted greens

Why this works

Patting the fish bone-dry and searing it skin-side down in a genuinely hot pan is what forms that blackened Cajun crust, while basting in foaming butter at the end keeps the flesh moist and carries the spice deep into the fish.

Common swaps

• Swap salmon for skinless cod or hake loins (reduce the cook time slightly)
• Use trout fillets for a lighter, more delicate result
• No cayenne? A pinch of chilli flakes or hot smoked paprika works
• Make it dairy-free by basting in more olive oil instead of butter

Common mistakes to avoid

• Not drying the salmon first, so it steams and the spice slides off instead of crusting
• Adding the fish to a pan that isn't hot enough, which stops the crust forming
• Moving or flipping too early and tearing the delicate flesh
• Overcooking until dry, salmon needs only a couple of minutes a side

Storage, freezing & reheating

Storage: Cool leftovers quickly and keep in an airtight container in the fridge for up to 2 days.

Freezing: Freezes well: wrap cooled fillets individually and freeze for up to 1 month, then defrost fully in the fridge before reheating.

Reheating: Reheat gently in a covered pan or low oven until piping hot throughout; a short blast in the microwave works but can dry the fish, so add a knob of butter.

Allergen notes: contains Fish, Milk. Always check individual product labels.

Estimated nutrition

Per serving, estimated from typical ingredient values — not a substitute for precise dietary calculation.