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Savor this chicken fajita casserole, a juicy chicken, sizzling peppers, and melty cheese baked into one flavorful dish. This easy casserole is a great way to get the taste of chicken fajitas without turning on the stovetop!

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Is your weeknight dinner routine stuck in a rut? Shake things up with chicken fajita casserole! This recipe blends the fiery taste of fajitas with the hearty feel of a casserole, all baked to perfection.

Why I love this recipe

Say goodbye to the hassle of traditional fajitas and hello to the convenience of this mouthwatering fajita chicken casserole recipe!

Bursting with vibrant flavors and simple ingredients, this dish is a one-pan wonder that brings all the sizzle and spice of classic fajitas to your dinner table. Plus, it’s incredibly versatile, making it perfect for busy weeknights or casual gatherings with friends and family.

It is a great way to enjoy fajitas without having to spend time at the stove. You can serve it on its own for a low-carb meal or use it to fill tortillas, so it is versatile as well.

Ingredients

chicken breasts
yellow and red bell pepper
yellow onion
fajita seasoning
olive oil
cheddar cheese
Optional for serving: flour tortillas, sour cream, diced avocado, chopped fresh cilantro, diced jalapeño

Step by step

Preheat the Oven: Preheat your oven to 350°F (175°C).
Prepare the Ingredients: Begin by preparing your ingredients. Dice the chicken breasts into bite-sized pieces. Thinly slice the bell peppers and onion.
Season and Mix: In a large bowl, combine the diced chicken, sliced peppers, and onions. Add the fajita seasoning and olive oil to the bowl. Toss everything together until well coated.

mixing chicken and peppers and onions for chicken fajita casserole

chicken fajita casserole in glass baking dish

Assemble the Casserole: Spread the chicken and vegetable mixture evenly in a casserole dish. Sprinkle the shredded cheese on top of the mixture, ensuring even coverage.
Bake: Place the baking dish in the preheated oven. Bake uncovered for approximately 35 minutes, or until the chicken is cooked through and the cheese is melted and bubbly.
Serve and Customize: Once out of the oven, serve on its own or use to fill tortillas and top with your favorite taco toppings.

Tips for best results

Prep the chicken and vegetable mixture in advance and store it in the refrigerator until ready to bake. This makes for a quick and easy meal prep option for busy days.
Enhance the flavor of your casserole by experimenting with different types of cheese or adding a squeeze of fresh lime juice before serving.
Enjoy any leftover chicken fajita casserole as a delicious filling for tacos, burritos, or quesadillas the next day!

chicken fajita casserole and fajitas on plate

Variations

Feeling like shaking things up a bit? You can switch up the taste by switching the type of cheese: try monterey jack cheese or pepper jack cheese for a little spice.

You can also play with the protein: switch the chicken with beef or shrimp or even black beans for a vegetarian option; or toss in some extra veggies like sliced mushrooms. There are so many ways to customize this dish to suit your taste buds!

Serving suggestions

You can eat the casserole on its own or use it as a filling for tortillas.

Serve with some classic plain rice, sour cream, guacamole, pico de gallo, salsa verde, or crunchy tortilla chips; any of your favorite taco toppings work with this tasty meal.

Storage

Store any leftover casserole in an airtight container and pin the refrigerator for up to 3 days.

To reheat, simply microwave until warmed through or heat in the oven at 350°F until hot and bubbly.

If you try this recipe please comment and rate it below, I love hearing from you!