Fajita Chicken Casserole Recipe

A Bold, Cheesy Comfort Food Favorite

Looking for a mouthwatering dinner idea that brings together all the flavors of fajitas in a cozy, oven-baked dish? This Fajita Chicken Casserole is the ultimate comfort food recipe packed with juicy shredded chicken, spiced fajita seasoning, melty cheese, and zesty vegetables—all layered into a rich, hearty bake perfect for weeknights or entertaining guests.

🔥 What Makes This Fajita Chicken Casserole So Irresistible?

Our fajita chicken casserole isn’t just another throw-it-together bake. This dish balances protein-packed chicken, creamy textures, and Southwestern spices in a way that delivers a deeply satisfying meal. Whether you’re feeding a hungry family, hosting a potluck, or prepping make-ahead meals, this cheesy chicken casserole will not disappoint.

🧀 Ingredients for the Perfect Cheesy Fajita Chicken Bake

To make the best version of this hearty fajita casserole, gather these simple pantry staples and let your oven do the rest:

  • 4 cups cooked shredded chicken (about 3 large chicken breasts)
  • 2 cups uncooked instant rice
  • 1 can (10.5 oz) cream of chicken soup
  • 1 cup sour cream
  • 1 cup frozen diced bell pepper and onion blend (no need to thaw)
  • 1 can (10 oz) diced tomatoes with green chilies (like RoTel), undrained
  • 1½ cups chicken broth
  • 1 packet (1.12 oz) fajita seasoning mix
  • 2 cups shredded Mexican blend cheese, divided (8 oz bag)

👩‍🍳 Step-by-Step Instructions for Fajita Chicken Casserole

1. Preheat the Oven

Preheat your oven to 350°F (175°C). Grease a 9×13-inch baking dish with butter or non-stick spray.

2. Mix All Ingredients

In a large bowl, combine:

  • Shredded chicken
  • Uncooked instant rice
  • Cream of chicken soup
  • Sour cream
  • Frozen pepper & onion mix
  • Diced tomatoes with chilies
  • Chicken broth
  • Fajita seasoning

Mix thoroughly until everything is well combined and coated in the creamy, seasoned mixture.

3. Assemble the Casserole

Pour the mixture into the greased baking dish, spreading it evenly from corner to corner.

4. Add Cheese

Sprinkle 1 cup of shredded cheese over the top for a gooey, golden finish.

5. Bake Covered Then Uncovered

  • Cover the dish with foil and bake for 30 minutes.
  • Remove foil and bake for another 10–15 minutes, until the cheese on top is bubbly and golden and the rice is fully cooked.

6. Cool and Serve

Let the casserole rest for 5–10 minutes to set before serving. Top with extra cheese, fresh cilantro, chopped green onions, or sliced jalapeños if desired.

💡 Pro Tips to Elevate Your Chicken Fajita Casserole

  • Use rotisserie chicken for a shortcut with extra flavor.
  • Substitute Greek yogurt for sour cream to lighten the dish.
  • Add a sprinkle of smoked paprika or chili powder for added depth.
  • Mix in a drained can of black beans or corn for extra texture and nutrition.
  • Want extra spice? Stir in a few dashes of hot sauce or a chopped chipotle pepper in adobo.

🥑 Delicious Toppings and Serving Suggestions

This versatile casserole goes well with many flavorful toppings:

  • Fresh avocado or guacamole
  • Salsa or pico de gallo
  • Sour cream or crema drizzle
  • Tortilla chips for crunch
  • Shredded lettuce for a fajita-style twist

Pair it with a side salad, refried beans, or grilled corn for a complete Tex-Mex-inspired dinner.

🥶 Storage and Make-Ahead Tips

  • Store leftovers in an airtight container in the refrigerator for up to 4 days.
  • Reheat in the microwave or oven until heated through.
  • This dish freezes beautifully! Wrap tightly in plastic wrap and foil. Freeze up to 2 months. Thaw overnight in the fridge before reheating.

📊 Nutrition Facts (Per Serving)

  • Calories: ~350 kcal
  • Protein: 22g
  • Fat: 17g
  • Carbs: 25g
  • Fiber: 2g
  • Serving Size: 1/8 of casserole

Nutritional values are approximate and may vary based on specific ingredients and brands used.

🔁 Easy to Customize: Make It Your Own

The beauty of this fajita chicken casserole is how adaptable it is:

Make it Low-Carb:

Swap out the rice for cauliflower rice and cut back on the soup for a lighter bake.

Add More Veggies:

Stir in chopped spinach, zucchini, or mushrooms for extra nutrients.

Try Different Proteins:

Use shredded turkey, ground beef, or even grilled shrimp for a fun variation.

🍽️ Why This Casserole Wins Every Time

  • One pan meal – less mess, more flavor
  • Kid-friendly and full of cheesy goodness
  • Great for meal prep or feeding a crowd
  • Packs tons of flavor without complicated steps
  • Combines comfort food with the zesty punch of fajitas

Whether you’re looking for a new weeknight dinner favorite or a potluck crowd-pleaser, this recipe will quickly earn its place in your meal rotation.

📌 Final Thoughts: A Flavorful Family Classic

This Fajita Chicken Casserole is a winning recipe that delivers all the bold Tex-Mex flavors you crave with minimal prep and maximum satisfaction. From the creamy, cheesy layers to the perfectly seasoned chicken and tender rice, it’s the kind of recipe you’ll come back to again and again.

If you’re ready to add a crowd-favorite comfort food to your rotation, make this casserole today. Your family—and your taste buds—will thank you.

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