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Best Chicken Fajita Casserole: 7 Easy, Delicious, and Quick Recipe Ideas

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This Chicken Fajita Casserole is a cheesy, oven-baked Tex-Mex favorite with seasoned chicken, bell peppers, onions, and melty cheese. Easy, customizable, and ready in under 40 minutes.

Ingredients

Scale
  • 1.5 lbs boneless skinless chicken breast or thighs, sliced

  • 3 bell peppers (mixed colors), sliced

  • 1 large onion, sliced

  • 2 tbsp olive oil

  • 1½ tsp chili powder

  • 1 tsp smoked paprika

  • ½ tsp cumin

  • 1 tsp garlic powder

  • ½ tsp onion powder

  • Salt and pepper to taste

  • 2 cups shredded cheese (cheddar or Mexican blend)

  • Optional: cooked rice, beans, corn, or diced tomatoes

Instructions

  • Preheat oven to 400°F. Grease a 9×13-inch baking dish.

  • Toss chicken, peppers, and onions with oil and spices.

  • Spread into dish and bake 20–25 minutes, until chicken is cooked.

  • Top with cheese and broil 3–5 minutes until melted and golden.

  • Rest 5 minutes. Serve with toppings or sides of choice.