DESCRIPTION
Cheesy Fajita Chicken Casserole is a bold, comforting dish that blends classic fajita flavors with the richness of a baked cheesy casserole. Juicy chicken, colorful bell peppers, onions, warm spices, and melted cheese come together in one satisfying, family-friendly meal that is perfect for busy weeknights or casual gatherings.
INTRODUCTION
If you love the sizzling flavors of chicken fajitas but want something easier and more comforting, this casserole is the perfect solution. Cheesy Fajita Chicken Casserole delivers everything you enjoy about fajitas without the need for tortillas or constant stovetop cooking. It is hearty, flavorful, and incredibly easy to prepare, making it a reliable recipe you will return to again and again.
WHY YOU’LL LOVE THIS RECIPE
This casserole is rich, cheesy, and full of bold fajita flavor
It is easy to prepare with simple, accessible ingredients
Perfect for meal prep and family dinners
Customizable to suit different tastes and spice levels
Comforting, filling, and great for leftovers
INGREDIENTS
2 boneless, skinless chicken breasts
1 red bell pepper, sliced
1 green bell pepper, sliced
1 yellow bell pepper, sliced
1 medium onion, sliced
1 tablespoon olive oil
1 packet fajita seasoning mix
1 cup shredded cheddar cheese
1 cup shredded mozzarella cheese
½ cup sour cream
¼ cup chopped fresh cilantro
Salt and black pepper to taste
Optional sliced jalapeños for extra heat
INSTRUCTIONS
Prepare the Oven
Preheat your oven to 375°F (190°C). Lightly grease a baking dish with cooking spray or oil.
Season the Chicken
Slice the chicken breasts into thin strips. Season with salt, black pepper, and half of the fajita seasoning.
Cook the Chicken
Heat olive oil in a skillet over medium-high heat. Add the chicken and sauté until fully cooked and lightly golden. Remove from the skillet and set aside.
Cook the Vegetables
In the same skillet, add the sliced bell peppers, onion, and the remaining fajita seasoning. Sauté until the vegetables are tender but still slightly crisp.
Assemble the Casserole
In a large bowl, combine the cooked chicken, sautéed vegetables, sour cream, and half of the cheddar and mozzarella cheeses. Mix until evenly combined.
Bake
Transfer the mixture to the prepared baking dish. Sprinkle the remaining cheese evenly on top. Bake for 20 to 25 minutes, or until the cheese is melted, bubbly, and lightly golden.
Rest and Garnish
Remove from the oven and let the casserole rest for a few minutes. Garnish with chopped fresh cilantro before serving.
VARIATIONS
Add cooked rice or quinoa to make it extra filling
Use pepper jack or Monterey Jack cheese for more heat
Swap chicken for beef or turkey
Add black beans or corn for extra texture
Top with crushed tortilla chips for crunch
TIPS FOR THE BEST RESULTS
Slice chicken and vegetables evenly for uniform cooking
Do not overcook the vegetables to keep them colorful and slightly crisp
Adjust spice level with more or less fajita seasoning or jalapeños
Let the casserole rest briefly before serving to set properly
STORAGE TIPS
Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat in the oven or microwave until warmed through. This casserole can also be frozen for up to 2 months.
SERVING SUGGESTIONS
Serve with warm tortillas or tortilla chips
Pair with a fresh green salad or guacamole
Add a side of rice or refried beans
Top with sour cream or avocado slices
FAQS
Can I make this casserole ahead of time
Yes, you can assemble it ahead, refrigerate, and bake when ready.
Can I use pre-cooked chicken
Yes, rotisserie chicken works well. Simply skip the cooking step and season lightly.
Is this casserole spicy
It is mildly spiced, but you can easily increase or reduce the heat to your preference.
CONCLUSION
Cheesy Fajita Chicken Casserole is the perfect combination of bold Mexican-inspired flavors and comforting baked goodness. Easy to prepare, endlessly customizable, and loved by both adults and kids, this dish is a guaranteed crowd-pleaser. Once you try it, it will quickly earn a permanent spot in your dinner rotation.