Flavorful Fajita Casserole

As seen in: Evening Meals That Deliver Results

Get ready to dig into this cheesy chicken fajita casserole! Juicy shredded chicken, quick-cook rice, colorful peppers, tangy fajita spices, and melty cheese come together in one dish. Super easy to toss together and awesome for busy nights, bake it until bubbly and golden. Let it cool a bit before slicing for the best texture. Pair it with some crunchy salad or warm bread, and you're good to go!

Sarah Crisp
Contributed By Sarah Crisp
Last modified on Mon, 02 Jun 2025 22:03:29 GMT
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This cheesy fajita chicken bake tosses together bold Tex-Mex flavors with cozy casserole vibes. The rice bakes up full of savory spices, soaking up every bit of goodness for a hearty, crowd-pleasing dish.

I came up with this dish in the middle of a crazy busy month. My family needed something filling, I needed easy, and the whole thing just came together. Now, whenever we want those Mexican flavors but I'm super short on time, this is an easy favorite.

Delicious Ingredients

  • 1 packet fajita seasoning is what brings everything together and makes it taste like real fajitas at your favorite spot
  • 360 ml chicken broth keeps the rice fluffy and adds tons of flavor as it cooks
  • 1 cup frozen diced onion and bell pepper blend is a shortcut to that classic veggie mix, no chopping needed
  • 1 bag shredded Mexican style cheese blend for loads of melty, gooey goodness
  • 1 can diced tomatoes with chilies packs in a little kick with bright tomato flavor, no draining required
  • 1 cup sour cream is the creamy secret that gives this dish a tangy, smooth finish
  • 2 cups uncooked instant white rice cooks right in the pan so you skip an extra step
  • 4 cups shredded cooked chicken breast fills you up and makes this dish a main event
  • 1 can cream of chicken soup ties it all together for maximum creaminess with no fuss

Easy Instructions

Top It Off With More Cheese
Sprinkle the rest of the cheese straight across the top. The baked casserole will help it melt fast and form that delicious golden top layer.
Finish Baking
Let it go back in the oven with nothing covering it. Bake about another 10 minutes until the cheese bubbles and just starts to brown on the edges. You want it ooey-gooey on top.
Prep Your Baking Dish
Spray a 9x13 dish with some nonstick spray. This helps make cleanup easy later and keeps things from sticking when you serve.
Mix Everything Together
Use a big bowl to toss together chicken, instant rice, soup, sour cream, veggies, tomatoes with their juices, broth, fajita seasoning, and half your cheese. Stir really well to get everything coated and help the flavors go everywhere. Doing this helps the rice cook just right later.
Bake Covered At First
Cover your dish tightly with foil to trap in steam. Bake at 175°C for about 35 minutes to help the rice get perfectly tender while soaking up flavor.
Pour Into The Dish
Dump the whole mixture right into your baking dish. Use a spatula to smooth it out so the rice is under the liquid for even cooking.
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The real trick here is using the store-bought fajita seasoning. I've mixed my own before, but it just doesn't pop with that iconic flavor. The packets are magic and give you that fun restaurant vibe every time.

Plan-Ahead Tips

This one’s perfect to make early. You can get everything together in the pan, cover it well, and stash in the fridge for up to a day. When you bake it cold, remember to tack on about 10 extra minutes so everything warms through. I love to do this on a quiet Sunday, so a busy weeknight dinner's already set.

Fun Ways To Serve

This bake stands on its own, but I usually put out extras for topping. Try putting out bowls with sliced avocado, fresh cilantro, lime wedges, extra sour cream or salsa on the side. For something fresh, toss together a simple green salad with cucumber and vinaigrette to balance out the creamy main dish.

Handy Swaps

Don’t worry if you’re missing something – it’s easy to swap ingredients. Leftover turkey works instead of chicken. Instant brown rice is fine; just pour in an extra splash of broth. If you can’t have lactose, go for lactose-free cheese or sour cream. Want heat? Toss in a chopped jalapeño or grab a spicy fajita seasoning mix.

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Common Queries

→ Can I swap out white rice for brown?

For sure! Just know that brown rice needs more liquid and time to cook compared to instant white rice.

→ Is it okay to use fresh veggies instead of frozen ones?

Definitely! Fresh-cut bell peppers and onions work great. Just sauté them a little first before mixing in.

→ How do I make this dish spicier?

If you like it hot, throw in some diced jalapeños, spicy fajita seasoning, or even a few chilies while cooking.

→ Can I prep this ahead of time?

Yep! Assemble it, cover tightly, and stick it in the fridge. Pop it in the oven when you're ready but add 5–10 extra minutes to bake time.

→ What can I use instead of cream of chicken soup?

Homemade creamy chicken soup, cream of mushroom, or a lighter yogurt-based sauce all work just as well.

Fajita Casserole

A cheesy chicken fajita casserole packed with hearty rice and yummy spices. Great for a quick, crowd-pleasing dinner!

Preparation Time
15 Minutes Required
Cooking Duration
45 Minutes Required
Overall Time
60 Minutes Required
Contributed By: Sarah Crisp

Recipe Type: Dinner Victories

Skill Level: Moderate

Cuisine Type: Tex-Mex

Serving Size: 8 Number of Servings

Dietary Preferences: ~

What You’ll Need

→ Main Components

01 1 bag (227 g) shredded Mexican cheese blend
02 4 cups (about 600 g) cooked chicken breast, shredded
03 2 cups (370 g) dry instant rice
04 1 can (298 g) condensed cream of chicken soup
05 1 cup (240 g) sour cream
06 1 cup (140 g) frozen mixed diced onions and bell peppers
07 1 can (284 g) diced tomatoes with green chilies, including juices
08 360 ml chicken stock
09 1 packet (32 g) fajita spice mix

Steps to Follow

Step 01

Coat a 23x33 cm (9x13-inch) oven dish lightly with some nonstick cooking spray.

Step 02

Mix the shredded chicken, dry rice, cream of chicken soup, sour cream, diced onion and bell pepper mix, tomatoes with chilies (juices included), chicken stock, fajita seasoning, and half the Mexican cheese in a large bowl. Keep mixing until everything's blended well.

Step 03

Transfer the mixture to the greased pan, spreading it evenly and leveling it out with a spatula.

Step 04

Cover the top with foil and bake in an oven preheated to 175°C for 35 minutes.

Step 05

Take off the foil, sprinkle the rest of the cheese over the top, and return to the oven. Bake uncovered for another 10 minutes, or until the cheese is fully melted and bubbling.

Additional Notes

  1. Let the dish sit for around 5 minutes before cutting into it. This will make slicing easier and help the texture set up nicely.

Tools to Have

  • A 23x33 cm (9x13-inch) baking dish
  • Mixing bowl (large)
  • Spatula
  • Foil (aluminum)

Allergen Information

Double-check ingredients for allergens, and seek medical guidance if necessary.
  • Dairy
  • Gluten

Nutrition Info (Per Serving)

These figures are estimates and shouldn’t replace professional health advice.
  • Calories Per Serving: 460
  • Fat Content: 24 grams
  • Carbohydrates: 38 grams
  • Protein Amount: 28 grams