Name: Fajita Chicken Casserole
Prep time: 15 min
Cook time: 25 min
Total time: 40 min
Cuisine: Tex-Mex
Ingredients: 2 cups cooked chicken, shredded or diced; 1 red bell pepper, sliced; 1 green bell pepper, sliced; 1 yellow bell pepper, sliced; 1 small onion, sliced; 1 tbsp olive oil; 1 tsp chili powder; 1 tsp cumin; 1/2 tsp smoked paprika; 1/2 tsp garlic powder; Salt and pepper, to taste; 1 cup cooked rice (white, brown, or Mexican rice); 1 cup black beans, drained and rinsed (optional); 1 cup shredded cheddar or Mexican cheese blend; 1/2 cup salsa; Fresh cilantro, for garnish; Sour cream or guacamole, for serving (optional)

I make this Fajita Chicken Casserole when I want something comforting, colorful, and packed with bold Tex-Mex flavor. Tender chicken, sautéed peppers and onions, seasoned rice, and melty cheese come together in one easy baked dish that is perfect for busy weeknights or casual family dinners.

Ingredients

(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)

2 cups cooked chicken, shredded or diced

1 red bell pepper, sliced

1 green bell pepper, sliced

1 yellow bell pepper, sliced

1 small onion, sliced

1 tbsp olive oil

1 tsp chili powder

1 tsp cumin

1/2 tsp smoked paprika

1/2 tsp garlic powder

Salt and pepper, to taste

1 cup cooked rice (white, brown, or Mexican rice)

1 cup black beans, drained and rinsed (optional)

1 cup shredded cheddar or Mexican cheese blend

1/2 cup salsa

Fresh cilantro, for garnish

Sour cream or guacamole, for serving (optional)

Directions

I start by preheating the oven to 375°F (190°C).

In a large skillet, I heat the olive oil over medium-high heat. I add the sliced bell peppers and onion, cooking them for about 5 to 7 minutes until they are tender-crisp.

I sprinkle the chili powder, cumin, smoked paprika, garlic powder, salt, and pepper over the vegetables and stir well so everything is evenly coated with seasoning.

In a large mixing bowl, I combine the cooked chicken, sautéed vegetables, cooked rice, black beans if I am using them, salsa, and half of the shredded cheese. I mix everything until well combined.

I transfer the mixture into a greased 9×13-inch baking dish and spread it evenly. Then I sprinkle the remaining cheese over the top.

I bake the casserole uncovered for 20 to 25 minutes, until the cheese is melted and bubbly. Once it comes out of the oven, I garnish it with fresh cilantro and serve it with sour cream or guacamole if I want extra creaminess.

Servings and timing

This recipe makes about 6 servings, depending on portion size.

Prep time: 15 minutes

Cook time: 25 minutes

Total time: 40 minutes

Variations

I sometimes use a packet of fajita seasoning instead of measuring individual spices when I want to save time.

For a lower-carb version, I substitute the regular rice with cauliflower rice.

If I want extra texture and flavor, I add corn, diced tomatoes, or even sliced jalapeños for a little heat. I also like swapping cheddar for pepper jack cheese when I want a spicier twist.

Storage/Reheating

I store leftovers in an airtight container in the refrigerator for up to 4 days.

When reheating, I warm individual portions in the microwave for 1 to 2 minutes, stirring halfway through for even heating. If I am reheating a larger portion, I cover it with foil and warm it in a 350°F oven until heated through.

I can also freeze the casserole for up to 2 months. I let it thaw overnight in the refrigerator before reheating.

FAQs

Can I make this casserole ahead of time?

Yes, I often assemble everything ahead of time, cover the dish tightly, and refrigerate it for up to 24 hours before baking. I may need to add a few extra minutes to the baking time if it goes into the oven cold.

Can I use uncooked chicken?

I prefer using fully cooked chicken for convenience. If I use raw chicken, I make sure to cook it completely before mixing it into the casserole.

What type of rice works best?

I use white rice, brown rice, or even Mexican-style rice. Any fully cooked rice works well in this recipe.

How can I make it spicier?

I add diced jalapeños, extra chili powder, hot salsa, or a pinch of cayenne pepper when I want more heat.

Can I make this dish dairy-free?

Yes, I simply omit the cheese or use a dairy-free shredded cheese alternative. The casserole still tastes flavorful thanks to the spices and salsa.

Conclusion

I find this Fajita Chicken Casserole to be one of the easiest and most flavorful ways to turn simple ingredients into a satisfying meal. It combines classic fajita flavors with the comfort of a baked casserole, making it perfect for weeknights, meal prep, or sharing with family and friends. Once I make it, it quickly becomes a regular part of my dinner rotation.

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