Grilled Cajun-Spiced Chicken Sandwich with Pickled Onions
A smoky grilled chicken sandwich featuring a bold Cajun spice rub and tangy quick-pickled red onions for a perfect balance of heat and acidity. This American-inspired sandwich and wrap recipe, ready in about 25 minutes, pairs boneless skinless chicken breasts, olive oil, Cajun seasoning for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 480 calories and feeds 2, 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
- 2 pieces (6 oz each) boneless skinless chicken breasts
- 2 tbsp olive oil
- 2 tbsp Cajun seasoning
- 1/2 cup red onion, thinly sliced
- 1/4 cup white vinegar
- 1 tbsp sugar
- 1/4 tsp salt
- 2 tbsp mayonnaise
- 2 sandwich buns
- 4 lettuce leaves
- 4 tomato slices
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Equipment for this recipe
Tools this recipe's steps call for, with a link to each on Amazon.
Instructions
- Step 1: Combine 1/4 cup white vinegar, 1 tbsp sugar, 1/4 tsp salt, and 1/2 cup thinly sliced red onion in a small bowl. Stir well and let sit at room temperature for 20 minutes to quick-pickle.
- Step 2: Rub 2 boneless skinless chicken breasts (6 oz each) evenly with 2 tbsp olive oil and then coat thoroughly with 2 tbsp Cajun seasoning.
- Step 3: Preheat grill or grill pan to medium-high heat (about 400°F). Grill chicken breasts for 5-6 minutes per side, until internal temperature reaches 165°F and juices run clear.
- Step 4: While chicken cooks, lightly toast 2 sandwich buns on the grill until golden, about 1 minute per side.
- Step 5: Spread 1 tbsp mayonnaise on the bottom half of each toasted bun. Layer 2 lettuce leaves, 2 tomato slices, one grilled chicken breast, and a generous spoonful of pickled red onions on each.
- Step 6: Top with the bun crowns and serve immediately with your favorite side.









