Fajita Chicken Casserole – A Bold, Cheesy Tex-Mex Comfort Dish

There’s something incredibly satisfying about a warm, cheesy casserole packed with bold spices and hearty ingredients. This fajita chicken casserole brings together everything you love about Tex-Mex fajitas—smoky seasoning, tender chicken, peppers, and melted cheese—into one simple baked dish. It’s rich, comforting, and perfect for busy weeknights when you want maximum flavor with minimal effort.

What makes this dish so special is how effortlessly it comes together. Instead of cooking everything separately like traditional fajitas, all the ingredients are combined and baked in one dish. The result is a creamy, cheesy casserole with layers of spice, softness, and texture in every bite. It’s the kind of meal that fills your kitchen with amazing aromas and disappears quickly from the table.

🌮 INGREDIENTS

🍗 Main Ingredients
4 cups shredded cooked chicken
2 cups instant rice (uncooked)
1 can cream of chicken soup (10.5 oz)
1 cup sour cream
1 cup frozen diced onion and bell pepper mix
1 can diced tomatoes with chilies (10 oz, undrained)
1½ cups chicken broth
1 packet fajita seasoning
2 cups shredded Mexican blend cheese (divided)

👩‍🍳 HOW TO MAKE FAJITA CHICKEN CASSEROLE

🔥 Step 1: Preheat the Oven
Preheat your oven to 350°F (175°C). Lightly grease a 9×13-inch baking dish.

🥣 Step 2: Mix Everything Together
In a large bowl, combine shredded chicken, uncooked instant rice, cream of chicken soup, sour cream, frozen peppers and onions, diced tomatoes with chilies, chicken broth, fajita seasoning, and half of the shredded cheese. Mix until everything is evenly combined.

🍲 Step 3: Assemble the Casserole

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