Seasoned chicken strips and fajita veggies smothered in melty cheese and baked in one pan make this chicken fajita casserole an easy, cheesy dinner the whole family will love.
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Easy One-Dish Dinner
This cheesy chicken fajita casserole is just as simple as sheet pan chicken fajitas and crockpot chicken fajitas, but everything goes in one dish and straight into the oven.
The best part is how versatile it is. Serve it over salad or rice as chicken fajita bowls, wrap it up in a tortilla, or just dig in as-is. Smoky fajita seasoning, crisp-tender peppers and onions, juicy chicken, and melty cheese make every bite packed with flavor.
Recipe Ingredients
Find the full printable recipe with specific measurements below.
- Chicken: You’ll need boneless skinless chicken breasts cut into 1/2 inch strips.
- Fajita veggies: Thaw a bag of frozen fajita veggies about 1 hour before you begin and drain any excess water.
- Cheese: I use a Mexican blend, but you can use your favorite shredded cheese.
- For serving: Tortilla shells, tortilla chips, sour cream, avocado slices, lime juice, and fresh cilantro.
How to Make Chicken Fajita Casserole
Toss the chicken strips and fajita veggies into a cast iron skillet or 9×13 baking dish, drizzle with olive oil, and sprinkle the fajita seasoning over everything. Give it a good toss with tongs so every piece is coated, then spread it out evenly.
From there it’s just cheese and the oven. Sprinkle a generous layer of shredded cheese over the top and bake uncovered for 20 minutes. That’s it! Serve it straight from the pan, in a tortilla, or over rice with your favorite toppings.
Recipe Variations
- Instead of the fajita seasoning mix, you can use homemade taco seasoning for a slightly different flavor.
- Boneless skinless chicken thighs can be used if you prefer the flavor of dark meat.
- If you want to use fresh vegetables, cut up a red bell pepper, green bell pepper, and an onion.
- Swap the Mexican blend for cheddar cheese or pepper jack cheese, if preferred.
- Turn it into a chicken fajita pasta recipe with some cream and farfalle pasta!
Serving Suggestions
Serve it in a homemade flour tortilla topped with guacamole or restaurant-style salsa, or over black beans and rice for a chicken fajita bowl. For a low carb option, serve over cauliflower rice.
Leftovers are also great scooped up with tortilla chips!
More Mexican recipe favorites include shrimp fajitas, steak Fajitas and this Fajita salad recipe.
More Easy Chicken Recipes
Chicken Fajita Casserole
Video
Ingredients
- 1 ½ Pounds boneless skinless chicken breast , sliced into 1/2-inch strips
- 2 Tablespoons olive oil
- 15 ounce bag fajita veggies , see notes
- 2 Tablespoons Fajita seasoning
- 1-2 cups shredded cheese , I used a Mexican blend
For serving (optional): Tortillas or tortilla chips, sour cream, avocado slices, cilantro
Instructions
- Prep. Preheat oven to 400°F.
- Assemble. Place 1 1/2 pounds chicken strips and 15 ounces fajitas veggies in a 9×13" casserole dish or 10-inch skillet. Drizzle 2 Tablespoons olive oil and 2 Tablespoons fajita seasoning over top. Toss until well coated. Sprinkle 2 cups cheese over the top.
- Bake. Bake uncovered for 20 minutes, or until chicken has cooked through to 165°F.
- Serve. Serve in a tortilla if desired and add your favorite toppings.
Last step: Please leave a comment and rating after you make the recipe.
Notes
Nutrition
Nutrition provided is an estimate. It will vary based on specific ingredients used.
Jami
Really good!!
Alisha
The recipe turned out great and was loved by the whole family. – Recipe tester
Sarah @IHeartNaptime
So glad to hear it was a dinnertime win!
Jim
Served it with tortillas and avocado slices—so good! The chicken was tender and flavorful, and we loved the combination of veggies and spices.
Faye R
Beyond delicious and SO easy to make!! Even my youngest who is so picky loved it!
Mel
This was the most delicious dinner and so easy to throw together. Loved it!
C.Ballard
Looking forward to trying it!