Sheet Pan Cajun-Spiced Shrimp with Roasted Peppers and Onions
Succulent shrimp tossed in bold Cajun spices and roasted alongside sweet bell peppers and onions, all cooked on a single sheet pan for easy cleanup. This latin american-inspired seafood (gluten free) ready in about 28 minutes pairs shrimp, peeled and deveined, olive oil, Cajun seasoning for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 220 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.
Ingredients
- 1 lb shrimp, peeled and deveined
- 1 medium red bell pepper, sliced into 1/2-inch strips
- 1 medium yellow bell pepper, sliced into 1/2-inch strips
- 1 medium red onion, sliced into 1/2-inch wedges
- 3 tbsp olive oil
- 2 tbsp Cajun seasoning
- 1 tsp salt
- 1/2 tsp black pepper
- 4 wedges lemon wedges, for serving
Instructions
- Step 1: Preheat oven to 425°F. In a large bowl, toss 1 lb peeled and deveined shrimp with 2 tbsp olive oil, 2 tbsp Cajun seasoning, 1 tsp salt, and 1/2 tsp black pepper until evenly coated.
- Step 2: On a large rimmed baking sheet, spread 1 sliced red bell pepper, 1 sliced yellow bell pepper, and 1 sliced red onion in a single layer. Drizzle with 1 tbsp olive oil and toss to coat.
- Step 3: Roast the vegetables for 10 minutes until they begin to soften and edges caramelize. Remove from oven, add the seasoned shrimp evenly over the vegetables.
- Step 4: Return the sheet pan to the oven and roast for another 6-8 minutes until the shrimp are pink and opaque, and the vegetables are tender.
- Step 5: Serve immediately with 4 lemon wedges for squeezing over the shrimp and vegetables.
Equipment for this recipe
Top-rated tools to make this recipe successfully.
Frequently asked questions
How long does Sheet Pan Cajun-Spiced Shrimp with Roasted Peppers and Onions take to make?
Total time is about 28 minutes (10 min prep + 18 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 Shrimp with Roasted Peppers and Onions?
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 shrimp, peeled and deveined from drying out.
Can I substitute ingredients in Sheet Pan Cajun-Spiced Shrimp with Roasted Peppers and Onions?
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 Shrimp with Roasted Peppers and Onions 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 Shrimp with Roasted Peppers and Onions 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.
