Step-by-Step Directions
1. Prep the Veggies
In a skillet, heat olive oil and sauté the sliced peppers and onion until slightly softened, about 5 minutes. Toss them with half the fajita seasoning.
2. Mix the Base
In a large bowl, combine the cooked chicken, sautéed peppers and onions, sour cream, salsa, and the remaining fajita seasoning. Stir until everything is coated in creamy, spicy goodness.
3. Assemble the Casserole
Spread the mixture evenly into a greased 9x13-inch baking dish. Sprinkle the shredded cheese generously on top.
4. Bake
Bake in a preheated oven at 375°F (190°C) for about 20–25 minutes, or until the cheese is melted, bubbly, and golden.
5. Garnish and Serve
Remove from the oven and let it cool slightly. Top with fresh cilantro, a squeeze of lime juice, and serve with warm tortillas, rice, or tortilla chips.
Tips for the Best Fajita Chicken Casserole
Spice control – Use mild salsa if you want it family-friendly, or hot salsa for extra heat.
Make it low-carb – Skip tortillas and serve with cauliflower rice.
Cheese swap – Pepper Jack adds a nice kick if you like it spicier.
Final Thoughts
The Fajita Chicken Casserole is more than just dinner—it’s a celebration of flavor. It’s creamy, cheesy, and loaded with Tex-Mex flair, yet simple enough to whip up on a weeknight. Whether served on its own, over rice, or scooped into tortillas, this dish is bound to become a regular in your recipe rotation.
