Cajun-Spiced Shrimp Fajita Stir Fry with Bell Peppers

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

This Whole30 compliant Cajun shrimp stir fry combines smoky spices with crisp bell peppers for a colorful, fast, and flavorful dinner. This mexican-inspired whole30 ready in about 25 minutes pairs raw peeled shrimp, avocado oil, green bell pepper, thinly sliced for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 250 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 Mexican cuisine 250 cal/serving
Build a week of meals around this recipe → Shop this recipe on Instacart → Shop equipment ↓

Ingredients

Equipment for this recipe

Top-rated tools to make this recipe successfully.

More Knives & cutting boards → Shop all kitchen tools →

Instructions

  1. Step 1: Toss 1 lb raw peeled shrimp with 2 tbsp Cajun seasoning and 1/2 tsp sea salt in a bowl until evenly coated.
  2. Step 2: Heat 2 tbsp avocado oil in a large skillet over medium-high heat until hot but not smoking, then add shrimp in a single layer and cook for 2-3 minutes per side until pink and cooked through; remove shrimp and set aside.
  3. Step 3: In the same skillet, add sliced 1 green bell pepper, 1 red bell pepper, 1 yellow bell pepper, and 1 medium sliced onion; sauté for 5-6 minutes until vegetables are tender-crisp and slightly caramelized.
  4. Step 4: Return shrimp to the skillet with vegetables, stir in 1 tbsp fresh lime juice, and cook together for 1 minute to meld flavors.
  5. Step 5: Remove from heat and sprinkle 2 tbsp chopped fresh cilantro over the dish before serving.

Frequently asked questions

How long does Cajun-Spiced Shrimp Fajita Stir Fry with 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 Cajun-Spiced Shrimp Fajita Stir Fry with 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 raw peeled shrimp from drying out.

Can I substitute ingredients in Cajun-Spiced Shrimp Fajita Stir Fry with 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 Cajun-Spiced Shrimp Fajita Stir Fry with 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 Cajun-Spiced Shrimp Fajita Stir Fry with Bell Peppers whole30?

Yes — this recipe is tagged whole30 based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.

Related recipes