Fajita Chicken Casserole

Featured in Satisfying Main Courses.

This satisfying dish brings together shredded chicken, seasoned instant rice, creamy soup, and a lively mix of onions, bell peppers, and diced tomatoes with chilies. Blended with sour cream, fajita seasoning, and layers of Mexican shredded cheese, the mixture is spread into a casserole dish and baked until bubbly and golden. A final layer of gooey cheese tops it off. This hearty combination delivers bold Southwestern flavors and a creamy texture, making it a family favorite for weeknights or entertaining alike. Simply serve warm and watch everyone dig in!

Barbara Chef
Updated on Sun, 01 Jun 2025 00:10:24 GMT
A dish of rice and chicken. Pin it
A dish of rice and chicken. | gracefulflavors.com

This Fajita Chicken Casserole became my go-to whenever I needed comfort food without much fuss. It packs all the punchy flavors of fajitas into a creamy, cheesy bake that everyone at my table loves. It is the kind of dish that works for weeknights but still feels special enough to serve when company drops by.

The first time I made this was for a Saturday family movie night. It disappeared before the opening credits were done and my family still asks for it every couple of weeks.

Ingredients

  • Shredded cooked chicken: for a hearty protein base I find rotisserie chicken has the best flavor and saves time
  • Instant rice: soaks up flavor and gives the casserole its perfect texture Choose a brand you trust for fluffy results
  • Cream of chicken soup: adds creamy body and binds everything together Look for low sodium if you prefer to control the salt
  • Sour cream: brings tang and silkiness Use full fat for best richness
  • Frozen diced onion and bell pepper blend: means no chopping and gives that classic fajita sweet pepper punch
  • Diced tomatoes with chilies: add tomato flavor and a gentle kick Do not drain for extra juiciness and a little heat
  • Chicken broth: keeps everything moist and infuses flavor Homemade or good-quality store bought makes a difference
  • Fajita seasoning: creates all that signature zesty flavor Opt for a lower sodium packet if you’re sensitive to salt
  • Shredded Mexican blend cheese: ties it all together with gooey melted goodness Freshly shredded cheese melts best

Step-by-Step Instructions

Prepare the Baking Dish:
Lightly coat your nine by thirteen inch casserole pan with oil spray so the casserole releases easily after baking and stays in nice servings.
Mix the Casserole Base:
Combine chicken, uncooked instant rice, cream of chicken soup, sour cream, frozen onion and pepper blend, undrained tomatoes with chilies, chicken broth, fajita seasoning, and half the cheese in a large mixing bowl. Stir thoroughly until you see no dry rice or pockets of unmixed soup. The mixture should look creamy and even.
Layer in the Dish:
Spoon the mixture evenly into the prepared baking pan. Spread it out to the edges and gently smooth the top for even baking.
Bake Covered:
Cover tightly with foil and bake in a preheated three hundred fifty degree oven for thirty five minutes. This steams the rice until it is tender and lets all the flavors mingle.
Add Cheese and Finish Baking:
Remove the foil carefully to release steam. Sprinkle the rest of the cheese over the casserole and slide it back in uncovered for ten more minutes. The cheese should be melted and bubbling around the edges when it is done.
A dish of rice and chicken. Pin it
A dish of rice and chicken. | gracefulflavors.com

My favorite part is always the golden cheesy corners where the rice gets a bit toasty. One time my niece claimed that the crispy edges tasted just like nachos and asked for extra next time. Now I purposely overbake it a couple minutes just for her.

Storage Tips

Let the casserole cool before covering and storing in the fridge where it keeps well for up to four days. To freeze, portion into airtight containers and stash for up to three months. Warm up in the oven or microwave until heated through for a speedy meal.

Ingredient Substitutes

You can swap in leftover turkey or cooked pork for the chicken without changing the method. White or brown quick-cooking rice both work, though you may need a splash more broth for brown rice. Greek yogurt stands in fine for sour cream if that is what you have on hand.

Serving Suggestions

I usually serve this with a crisp green salad and maybe a handful of tortilla chips on the side for crunch. It also works rolled up in warm tortillas for an easy burrito night. Add slices of avocado or a dollop of extra sour cream for a Tex-Mex touch.

A dish of chicken and rice. Pin it
A dish of chicken and rice. | gracefulflavors.com

Cultural Context

Casseroles like this are a staple in many American kitchens and borrow from the flavors of Tex-Mex fajitas popularized in the Southwest. It is hearty and crowd-pleasing and you will find riffs on this dish everywhere from church potlucks to family gatherings across the Midwest and South.

Frequently Asked Questions

→ Can I use freshly cooked rice instead of instant rice?

It's best to use instant rice, as it cooks properly with the casserole's liquid. Cooked rice may result in a drier texture since it absorbs less liquid during baking.

→ Are there substitutions for the cream of chicken soup?

You can use cream of mushroom or cream of celery soup for a different base flavor, or homemade white sauce if you prefer.

→ How spicy is this dish?

The heat level depends on your diced tomatoes with chilies and the fajita seasoning. For less spice, use mild versions or omit chilies.

→ Can I prepare this in advance?

Yes, assemble the casserole ahead and refrigerate, then bake as directed. Add a few extra minutes to the bake time if starting cold.

→ What sides pair well with this dish?

Serve with fresh green salad, sliced avocados, or warm tortillas for a complete meal with extra flavor and texture.

→ Is it freezer-friendly?

This casserole can be frozen before or after baking. Wrap tightly and reheat in the oven until hot throughout when ready to serve.

Fajita Chicken Casserole Bake

Bold fajita flavors, tender chicken, and cheese meld in this satisfying, easy-to-make casserole bake.

Prep Time
15 Minutes
Cook Time
45 Minutes
Total Time
60 Minutes
By: Barbara

Category: Hearty Mains

Difficulty: Easy

Cuisine: Tex-Mex

Yield: 8 Servings (1 large casserole (8 portions))

Dietary: ~

Ingredients

→ Main Components

01 4 cups (approximately 600 g) shredded cooked chicken breast
02 2 cups (370 g) uncooked instant white rice
03 1 can (298 g) cream of chicken soup
04 1 cup (240 g) sour cream
05 1 cup (140 g) frozen diced onion and bell pepper blend
06 1 can (284 g) diced tomatoes with chilies, undrained
07 360 ml chicken broth
08 1 packet (32 g) fajita seasoning
09 1 bag (227 g) shredded Mexican-style cheese blend

Instructions

Step 01

Lightly grease a 23x33 cm (9x13-inch) ovenproof dish with nonstick cooking spray.

Step 02

In a large mixing bowl, combine shredded chicken, uncooked instant rice, cream of chicken soup, sour cream, frozen diced onion and bell pepper blend, undrained diced tomatoes with chilies, chicken broth, fajita seasoning, and half of the shredded Mexican cheese blend. Mix thoroughly until all ingredients are evenly incorporated.

Step 03

Spread the prepared mixture evenly into the greased baking dish, smoothing the surface with a spatula.

Step 04

Cover the dish with aluminum foil and bake in a preheated oven at 175°C for 35 minutes.

Step 05

Remove foil, sprinkle the remaining cheese evenly over the top, and return to the oven. Bake uncovered for a further 10 minutes, until the cheese is melted and bubbling.

Notes

  1. Allow the casserole to rest for 5 minutes before serving to ensure easier slicing and optimal texture.

Tools You'll Need

  • Large mixing bowl
  • 23x33 cm (9x13-inch) ovenproof baking dish
  • Aluminum foil
  • Oven
  • Spatula

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Contains milk and milk derivatives
  • Contains gluten

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 398
  • Total Fat: 16.8 g
  • Total Carbohydrate: 36.2 g
  • Protein: 25.3 g