This 45-minute baked chicken fajita casserole combines bite-size chicken, sliced peppers, and onion with fajita seasoning, salsa, and cream cheese. The casserole bakes uncovered for 20 minutes, then gets stirred and topped with shredded Mexican-blend cheese for the final 10 minutes.
Chicken Fajita Casserole
Ingredients
- 1 1/2 lb boneless skinless chicken breasts, cut into bite-size strips
- 1 red bell pepper, sliced
- 1 yellow bell pepper, sliced
- 1 green bell pepper, sliced
- 1 medium yellow onion, sliced
- 2 tbsp olive oil
- 2 tbsp fajita seasoning
- 1 cup salsa
- 4 oz cream cheese, softened and cut into small pieces
- 1 1/2 cups shredded Mexican-blend cheese
- 1 tbsp lime juice
- 2 tbsp chopped fresh cilantro, optional
Instructions
- Preheat oven to 375°F (190°C). Lightly grease a 9x13-inch baking dish.
- Add chicken, peppers and onion. Drizzle with olive oil, add fajita seasoning, and toss evenly.
- Spread evenly. Spoon salsa over the mixture and distribute cream cheese over the top.
- Bake uncovered 20 minutes.
- Stir carefully and top with shredded cheese.
- Bake about 10 minutes more, until cheese is melted and chicken reaches 165°F (74°C).
- Finish with lime juice and optional cilantro; rest 5 minutes before serving.
Recipe Notes
- Storage: Refrigerate promptly and use within 3-4 days.
- Reheating: Reheat leftovers to 165°F.
Why this casserole method works
- Chicken and similarly sized peppers and onion share one baking dish, so the pieces can cook together without managing separate pans.
- Salsa and softened cream cheese form the saucy base around the chicken and vegetables as they bake.
- Adding the shredded cheese after the first bake keeps it from sitting through the full cooking time; it melts over the stirred casserole during the final 10 minutes.
How to keep the chicken juicy and the peppers tender
- Cut the chicken into reasonably even bite-size strips and slice the vegetables evenly so the pieces cook at a similar rate.
- Spread the mixture evenly in the 9x13-inch baking dish rather than piling it heavily in the center.
- Stir carefully after the first 20 minutes, then add the shredded cheese and return the dish to the oven.
- Check the thickest chicken pieces with a thermometer; the casserole is ready when they reach 165°F (74°C).
- Rest the casserole for about 5 minutes before serving so the hot sauce can settle slightly.
Troubleshooting
The casserole looks watery
Let it rest for the full 5 minutes before judging the texture. If it is still loose, check that the chicken and vegetables were spread evenly rather than crowded in a deep pile next time.
The chicken pieces cook unevenly
Uneven strip size or a crowded center can make some pieces finish sooner. Cut the chicken consistently and spread the mixture across the dish before baking.
The vegetables become too soft
Slice the peppers and onion evenly and check the chicken at the stated endpoint rather than extending the bake well beyond 165°F. The vegetables will continue softening while the casserole rests.
Refrigerate promptly and use within 3 to 4 days. Reheat thoroughly to 165°F before serving.
Serve it as-is for a complete chicken-and-vegetable casserole, or add a simple green salad for contrast.
Frequently asked questions
Can I make Chicken Fajita Casserole ahead of time?
Yes! Assemble up to 24 hours ahead, cover and refrigerate. Add 10-15 minutes to the baking time when cooking from cold.
What’s the best cheese to use?
Use 1 1/2 cups shredded Mexican-blend cheese. Add it after stirring the casserole near the end of baking so it melts over the chicken and vegetables.
How do I know when the chicken fajita casserole is done?
The casserole is ready when the chicken reaches 165°F (74°C) in the thickest pieces and the cheese is melted. Let it rest for about 5 minutes before serving.
How do I prevent my Chicken Fajita Casserole from becoming soggy?
Spread the chicken and vegetables in an even layer and avoid overcrowding the baking dish. After the first 20 minutes, stir before adding the shredded cheese. Let the finished casserole rest for about 5 minutes before serving.
Is this recipe gluten-free?
The main ingredients can fit a gluten-free meal, but check the labels on the fajita seasoning, salsa, cream cheese, and shredded cheese if you need to avoid gluten.
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