Step-by-step instructions
- Preheat the oven. Start by setting your oven to 350°F (175°C) to ensure it’s ready for your casserole.
- Mix the ingredients. In a large bowl, combine the cream of chicken soup, sour cream, frozen onion and bell pepper blend, diced tomatoes with chilies (don’t drain them), chicken broth, and the fajita seasoning. Stir until well blended.
- Transfer to baking dish. Pour the mixture into a greased casserole dish, spreading it out evenly.
- Bake. Place the dish in the preheated oven and bake for 30-35 minutes, or until the casserole is hot and bubbly.
- Serve. Enjoy warm, garnished with shredded cheese or fresh cilantro for that extra touch.
Best ways to enjoy it
This Fajita Chicken Casserole Bake is delicious on its own, but you can elevate your meal with some creative serving ideas. Consider adding a side of warm tortillas for scooping, or a fresh salad to balance out the richness. You could even serve it over a bed of rice or quinoa for a heartier meal. Don’t forget to offer toppings like sliced jalapeños, avocado, or a dollop of guacamole for that authentic flair!
Storage and reheating tips
To keep your leftovers fresh, cool the casserole completely before transferring it to an airtight container. It can be stored in the refrigerator for up to 3 days. Reheat in the oven or microwave until thoroughly warmed. If you’d like to freeze it, make sure to use a freezer-safe container, and it can last for up to 3 months. Always ensure that the casserole is heated to an internal temperature of 165°F (74°C) before consuming.
Helpful cooking tips
For better flavor infusion, let the casserole sit for a few minutes after baking before serving. This allows the ingredients to meld beautifully. If you want a golden top, consider broiling for an additional 2-3 minutes but keep a close eye to avoid burning!
Creative twists
There are plenty of ways to customize your Fajita Chicken Casserole to fit your taste. Try swapping in different proteins, such as shredded beef or black beans for a vegetarian option. Change up the seasoning by adding smoked paprika or cumin for extra depth. For a cheesy delight, top it with various cheeses like Monterey Jack, pepper jack, or even crumbled queso fresco.

Your questions answered
How long does this dish take to prepare?
Preparation is quick, taking about 10 minutes of hands-on time, followed by 30-35 minutes of baking.
Can I use fresh vegetables instead of frozen?
Absolutely! Fresh bell peppers and onions can add a great crunch, just sauté them lightly before adding to the mix.
How can I make it more spicy?
To kick up the heat, use spicy diced tomatoes or add some chopped jalapeños into the mixture.
This Fajita Chicken Casserole Bake is not just easy to prepare; it’s also adaptable, delicious, and guaranteed to impress. Enjoy the joyful gathering of flavors in every bite!






