Name: Creamy Chicken Fajita Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Cuisine: Mexican-Inspired
Ingredients: 2 lb boneless, skinless chicken breasts, sliced; 3 bell peppers, sliced; 1 large onion, sliced; 2 tablespoons olive oil; 2 tablespoons fajita seasoning; 8 oz cream cheese, softened; 1 cup sour cream; 1 1/2 cups shredded cheddar or Mexican-blend cheese; 1 teaspoon garlic powder; 1/2 teaspoon salt; 1/2 teaspoon black pepper

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This creamy chicken fajita casserole is one of my favorite comfort dinners when I want bold flavor with very little effort. I love how the tender chicken, peppers, and onions bake together in a creamy, spiced sauce that feels rich and satisfying. It gives me all the flavors of classic fajitas in an easy, cozy casserole form.

Why You’ll Love This Recipe

I love this recipe because it’s simple to prepare and packed with flavor. I like how the fajita seasoning blends into the creamy sauce, coating every bite of chicken and vegetables. It’s also a great make-ahead meal, which helps me stay relaxed on busy nights. Creamy Chicken Fajita Casserole

Ingredients

(Here’s a tip: Check out the full list of ingredients and measurements in the recipe card below.)

boneless, skinless chicken breasts
bell peppers, sliced
onion, sliced
olive oil
fajita seasoning
cream cheese, softened
sour cream
shredded cheddar or Mexican-blend cheese
garlic powder
salt
black pepper

directions

I start by preheating the oven and lightly greasing a baking dish. I slice the chicken into strips and toss it with olive oil, fajita seasoning, garlic powder, salt, and pepper. I spread the chicken evenly in the dish and top it with the sliced peppers and onions. In a bowl, I mix the cream cheese and sour cream until smooth, then spread it over the chicken and vegetables. I sprinkle shredded cheese on top and bake until the chicken is cooked through and the casserole is hot and bubbly. I let it rest briefly before serving.

Servings and timing

I usually make this casserole to serve 6 people.
Preparation time: about 15 minutes
Baking time: about 30 minutes
Total time: approximately 45 minutes

Variations

I sometimes add sliced mushrooms or zucchini for extra vegetables. When I want more heat, I mix in jalapeños or a pinch of cayenne. I also enjoy using rotisserie chicken to save time or swapping cheddar for pepper jack cheese for a spicier finish.

storage/reheating

I store leftovers in an airtight container in the refrigerator for up to 4 days. When reheating, I warm individual portions in the microwave or reheat the casserole in the oven at a low temperature. If needed, I stir in a small splash of milk to loosen the sauce. Creamy Chicken Fajita Casserole

FAQs

Can I make this casserole ahead of time?

I often assemble it ahead, cover it, and refrigerate it for up to one day before baking.

Can I use cooked chicken?

I do sometimes, and I simply reduce the baking time since the chicken is already cooked.

What can I serve with creamy chicken fajita casserole?

I like serving it with rice, tortillas, or a simple green salad.

Can I make this casserole low-carb?

I skip serving it with rice or tortillas and enjoy it on its own or with cauliflower rice.

How do I keep the chicken from drying out?

I make sure the chicken is well coated in the creamy mixture and avoid overbaking.

Conclusion

Creamy chicken fajita casserole is a comforting, flavorful dish I love making when I want something hearty and easy. The creamy sauce, tender chicken, and bold fajita spices come together into a reliable dinner that always feels satisfying and stress-free.

Creamy Chicken Fajita Casserole

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A cozy, flavor-packed casserole made with tender chicken, bell peppers, and onions baked in a creamy fajita-spiced sauce for an easy and satisfying dinner.

Author: Lizaa
Prep Time: 15 minutes
Cook Time: 30 minutes
Total Time: 45 minutes
Yield: 6 servings
Category: Dinner
Method: Baking
Cuisine: Mexican-Inspired
Diet: Halal

Ingredients

2 lb boneless, skinless chicken breasts, sliced
3 bell peppers, sliced
1 large onion, sliced
2 tablespoons olive oil
2 tablespoons fajita seasoning
8 oz cream cheese, softened
1 cup sour cream
1 1/2 cups shredded cheddar or Mexican-blend cheese
1 teaspoon garlic powder
1/2 teaspoon salt
1/2 teaspoon black pepper

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Instructions

Preheat the oven to 375°F (190°C) and lightly grease a 9×13-inch baking dish.
Toss the sliced chicken with olive oil, fajita seasoning, garlic powder, salt, and black pepper.
Spread the seasoned chicken evenly in the prepared baking dish.
Top the chicken with sliced bell peppers and onion.
In a bowl, mix the cream cheese and sour cream until smooth.
Spread the creamy mixture evenly over the chicken and vegetables.
Sprinkle shredded cheese over the top.
Bake for 30 minutes, or until the chicken is cooked through and the casserole is hot and bubbly.
Let rest for 5 minutes before serving.