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Fajita Chicken Casserole Recipe

4.6 from 150 reviews

This Fajita Chicken Casserole is a flavorful, easy-to-make dish combining tender chicken breast with sautéed bell peppers and onions, seasoned with bold fajita spices, and topped with melted cheese for a deliciously satisfying meal perfect for a family dinner or meal prep.

Ingredients

Scale

Chicken and Vegetables

  • 2 large chicken breasts, sliced into strips
  • 1 red bell pepper, sliced
  • 1 green bell pepper, sliced
  • 1 large onion, sliced
  • 2 tablespoons fajita seasoning

Cheese Topping

  • 1 cup shredded cheddar cheese
  • 1 cup shredded Monterey Jack cheese

Instructions

  1. Prepare the Ingredients: Preheat your oven to 375°F (190°C). Slice the chicken breasts into thin strips for even cooking. Slice the bell peppers and onion into thin strips to complement the fajita style.
  2. Combine Chicken and Vegetables with Seasoning: In a large mixing bowl, toss the sliced chicken, bell peppers, and onions with the fajita seasoning until everything is evenly coated. This will infuse the ingredients with the classic fajita flavor.
  3. Assemble the Casserole: Transfer the seasoned chicken and vegetable mixture into a greased baking dish, spreading it out evenly to ensure uniform cooking.
  4. Add Cheese Topping: Evenly sprinkle the shredded cheddar and Monterey Jack cheeses over the top of the chicken and vegetables. This creates a cheesy, bubbly crust once baked.
  5. Bake the Casserole: Place the baking dish in the preheated oven and bake for 25-30 minutes, or until the chicken is fully cooked (internal temperature of 165°F/74°C) and the cheese is melted, golden, and bubbly.
  6. Serve and Enjoy: Remove from the oven and let the casserole rest for a few minutes before serving. This dish pairs well with rice, tortillas, or a fresh salad for a complete meal.

Notes

  • For extra heat, add sliced jalapeños to the vegetable mix before baking.
  • You can substitute chicken thighs for a juicier alternative.
  • Use a combination of cheeses for a richer flavor or meltability.
  • This casserole can be prepped a day ahead and refrigerated before baking.
  • Leftovers keep well and reheat nicely in the microwave or oven.

Keywords: fajita chicken casserole, chicken casserole, baked fajita chicken, Tex-Mex casserole, cheesy chicken bake