Sheet Pan Cajun-Spiced Red Snapper with Roasted Vegetables

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

A vibrant and flavorful sheet pan dinner featuring red snapper fillets seasoned with Cajun spices, roasted alongside colorful vegetables for an effortless meal. This southern-inspired seafood ready in about 45 minutes pairs fillets (6 oz each) red snapper fillets, olive oil, cajun seasoning for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 320 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: 15 min Cook: 30 min Serves 4 Southern cuisine 320 cal/serving
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Ingredients

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Instructions

  1. Step 1: Preheat oven to 425°F. Line a large sheet pan with parchment paper. In a bowl, toss 1 sliced red bell pepper, 1 sliced yellow squash, and 1 sliced red onion with 2 tbsp olive oil, 1 tsp salt, 1/2 tsp black pepper, 3 minced garlic cloves, and 1 tbsp fresh thyme leaves.
  2. Step 2: Spread the vegetables evenly on the sheet pan and roast for 15 minutes until they begin to soften.
  3. Step 3: While vegetables roast, rub 4 red snapper fillets with 1 tbsp olive oil and 2 tbsp Cajun seasoning.
  4. Step 4: Remove the sheet pan from oven, nestle the snapper fillets on top of the vegetables, and drizzle 2 tbsp fresh lemon juice over everything.
  5. Step 5: Return the sheet pan to the oven and roast for an additional 12-15 minutes until the fish is opaque and flakes easily with a fork. Serve hot.

Frequently asked questions

How long does Sheet Pan Cajun-Spiced Red Snapper with Roasted Vegetables take to make?

Total time is about 45 minutes (15 min prep + 30 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 Red Snapper with Roasted Vegetables?

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 olive oil from drying out.

Can I substitute ingredients in Sheet Pan Cajun-Spiced Red Snapper with Roasted Vegetables?

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 Red Snapper with Roasted Vegetables 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.

What goes well with Sheet Pan Cajun-Spiced Red Snapper with Roasted Vegetables?

Southern seafood like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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