Sheet Pan Cajun-Spiced Salmon with Roasted Bell Peppers

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

Tender salmon fillets seasoned with bold Cajun spices roasted alongside sweet bell peppers for a vibrant, easy dinner. This american-inspired seafood (gluten free) ready in about 25 minutes pairs (6 oz each) salmon fillets, olive oil, Cajun seasoning for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 350 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 10 min Cook: 15 min Serves 4 American cuisine 350 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 425°F. In a large bowl, toss 1 sliced red bell pepper and 1 sliced yellow bell pepper with 2 tbsp olive oil, 1 tsp salt, and 1/2 tsp black pepper; spread evenly on a large rimmed baking sheet.
  2. Step 2: In the same bowl, combine 2 tbsp Cajun seasoning, 1 tsp garlic powder, and 1 tbsp olive oil; rub this mixture evenly over 4 salmon fillets (6 oz each).
  3. Step 3: Nestle the seasoned salmon fillets among the peppers on the baking sheet and roast for 12-15 minutes until the salmon is opaque and flakes easily with a fork, and the peppers are tender.
  4. Step 4: Remove from oven and drizzle the salmon and peppers with 1 tbsp fresh lemon juice, then garnish with 2 tbsp chopped fresh parsley before serving.

Equipment for this recipe

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Frequently asked questions

How long does Sheet Pan Cajun-Spiced Salmon with Roasted Bell Peppers take to make?

Total time is about 25 minutes (10 min prep + 15 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Sheet Pan Cajun-Spiced Salmon with Roasted Bell Peppers?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep (6 oz each) salmon fillets from drying out.

Can I substitute ingredients in Sheet Pan Cajun-Spiced Salmon with Roasted Bell Peppers?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Sheet Pan Cajun-Spiced Salmon with Roasted Bell Peppers for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

Is Sheet Pan Cajun-Spiced Salmon with Roasted Bell Peppers gluten free?

Yes — this recipe is tagged gluten free based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.