Easy Chicken Fajita Casserole

Tender seasoned chicken, onions, peppers, and loads of melty cheese. Everything you love about fajitas in a simple-to-make casserole that you can prepare in advance and toss in the oven for a quick and delicious dinner tonight. 

Suitable for gluten free and low carb diets. Post includes Weight Watchers points.

This fajita casserole is full of flavor and contains ingredients you probably already have in your pantry. It’s easy to prepare and cooks so quickly.

Easy Cheesy Chicken Fajita Casserole

You are only 6 ingredients away from enjoying a delicious low-carb chicken fajita bake. As easy as this Chicken Fajita Pasta and Foil Pack Chicken Fajitas.

This kid-friendly meal is perfect for even your busiest nights and even easier if you take a few minutes to toss everything together in a casserole dish the night before or first thing in the morning. Have a few extras like sour cream, sliced avocado, pico, and a fresh salad on hand to make a filling meal that the whole family will love. 

Why Make This Recipe

• Easy – make ahead of time and bake in under 30 minutes.
• Flavorful – Everything you love about fajitas cooked in a single dish in the oven while you relax. 
• Easy – you only need a few ingredients and minimal prep time and short cook time.
• Kid-Friendly – Kids love this meal, so it is perfect for any night of the week. 

Ingredient Notes

• Chicken breast– Look for flat, even boneless skinless chicken breasts or butterfly large breasts into even pieces. Or pound them yourself so they are flat. You can make this with boneless chicken thighs.
• Fajita seasoning – Available in the spice aisle, this seasoning gives meat that restaurant-style fajita flavor. You can use taco seasoning instead.
• Olive oil – But any kind of mild vegetable oil (or cooking spray) will work.
• Bell peppers – Make this dish colorful by selecting a few different colors of bell pepper.
• Onion – Use what you have on hand. Sweet onion and red onion are our favorites. 
• Cheese – Monterey jack, cheddar cheese, mozzarella, and pepper jack all work, so use whatever you have in your fridge.  

How To Make Fajita Chicken Casserole

Get full ingredients list and instructions from the recipe card below.

1. Preheat oven to 350 F / 176C.
2. Toss chicken breasts with the oil and fajita seasoning until coated and lay in a casserole dish. 
3. Then add the sliced peppers and onions and top with cheese. 
4. Bake 25-30 minutes, until chicken is cooked through, pepper and onions are tender, and the cheese is melted. 
5. Serve with your favorite fajita toppings like sour cream and chopped cilantro. 

Make This With Cooked Chicken

You can make baked chicken fajita with rotisserie chicken.

1. Preheat oven to 350 F / 176C.
2. Toss shredded chicken breasts or skinless chicken thighs with the oil and fajita seasoning until coated and lay in a casserole dish. 
3. Then add the sliced bell peppers and onions and top with cheese. 
4. Bake for 20 minutes, until the cheese is melted and bubbly before serving. 

Tips For Success

A few tips on how to make chicken fajitas casserole easily.

• Look for four evenly-sized chicken breasts for even cooking. 
• Thinly sliced, uniformly cut pieces of peppers will cook quicker and evenly. 
• Always check chicken for doneness with a meat thermometer. Cooked chicken should reach an internal temperature of at least 165F / 74C.

Variations

• Make it Spicy – Add some sliced jalapenos, thinly sliced poblanos, or pepper jack cheese to give this fajita chicken a little kick.
• Make it Creamy – Combine room temperature cream cheese, fajita seasoning, and olive oil and coat the chicken. Proceed with the recipe as directed, and you will have a creamy, cheesy sauce. 
• Vary the cheese –
• Add more bulk – you can add things like black beans or other beans for bulk.
• Season with salt and pepper it you prefer.

Budget-Friendly Tips 

• Buy Chicken In Bulk – Stock up on chicken when it’s on sale or buy it in bulk and freeze for later.
• Make Your Own Seasonings – Store bought seasoning is good but homemade fajita seasoning mix is easy to make, and you can tailor it to your taste buds. 
• Add a Side –  Serve this casserole with refried beans, rice, corn, or a side salad to make it a full meal. 

Make Ahead, Storage and Reheat

• Prep Ahead – Prep everything in a casserole dish the night before or in the morning and store it in the fridge until you are ready to toss it in the oven. 
• Store – Store leftovers in the fridge for up to three days. Reheat in the microwave. 
• Freeze – Follow the handy tips below for how to freeze these; Prepare the casserole as directed but do not bake. Cover tightly with plastic wrap and foil. Freeze for up to three months. 
• Thaw – defrost overnight in the fridge and bake as directed. 

Meal Prep

• Make an extra batch or two that you can use with other meals throughout the week.
• This recipe stores for 3 days, so you can eat it on the day you cook it plus 3 more days.
• Separate leftovers in single portions, place in airtight meal prep containers and let cool completely with the lids off before sealing and storing.
• To vary it up through the week and make different meals, feel free to serve along with various salads or grilled cauliflower, or if not low carb then tortillas and baked potatoes.

FAQs

More Recipes You May Like

• Instant Pot Chicken Fajita Pasta.
• Instant Pot Chicken Fajitas.
• Instant Pot Chicken Enchiladas.
• Foil Pack Chicken Fajitas.

Serving Suggestions

• Pico Di Gallo.
• Agua Fresca.
• Garlic Butter Red Potatoes.
• Cauliflower rice as a low carb side or Instant Pot Cilantro Lime Rice if not low carb.

Weight Watchers Points

There are 8 Blue Plan SmartPoints in one serving of this.

Tools To Make This

• A quick read thermometer for checking the chicken temperature.
• Measuring cups and spoons.

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Did you make this recipe? Then I would love to hear how it turned out. Please leave a comment and star rating below. And I really appreciate you sharing this recipe with your family and friends. Enjoy every mouthful 😊🍲 – Bintu

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