Cheesy Chicken Fiesta Casserole

Cheesy Chicken Fiesta Casserole is filled with crispy coated chicken breasts and covered with a lightly spiced creamy cheese sauce. It’s all packed into one easy to bake, cheesy casserole. The perfect weeknight dinner for the whole family.

Lifting a cheesy chicken breast out of casserole dish


Fiesta Chicken Casserole

Weeknights are pretty hectic for most families and quick and easy one-pan dishes are real lifesavers!  Favorites like Chicken Chablis with Mushrooms and Easy Cheesy Chicken Rollups. However, it’s hard to beat this simple cheesy Chicken Fiesta Casserole for a delicious dinner.  It’s just a matter of coating the chicken with seasoning and crumbs then whipping up a yummy cheese sauce to bake it in. Because, if you’re like me, an ooey gooey cheese sauce makes everything taste better.  I mean, just look at that creamy cheesy sauce!

pouring cheese sauce over chicken in casserole wide

The chicken is coated with a taco seasoning and cheesy cracker crumbs. You can use a mild seasoning or a hot seasoning depending on your heat preference. The sauce has two cheeses, cheddar and pepper jack, but if you don’t like the heat, change out the pepper jack for Monterey Jack and you’ll be all set. The cheeses are combined with half and half, green chiles and onions but I like to use a fat-free half and half to cut calories. 

Easy steps to make this Mexican-inspired chicken casserole

ingredients for prepping chicken with cheez-its and taco seasoning

  1. Gather your ingredients to prepare the chicken. Just 4 large chicken breasts, taco seasoning (see notes in recipe section to make your own) and Cheez-Its.

Chicken Fiesta chicken prep steps 2-3

  1. Make the Cheez-Its, or any cheesy cracker or chip, into crumbs by either placing in a large plastic bag and crushing them with a rolling pin or using a small chopper. I swear by my Ninja chopper and use it for grinding nuts, pestos and even nice cream.

coated chicken in casserole dish

  1. Place chicken in bag and toss to coat. Place in prepared 9×13-inch baking dish.

Chicken Fiesta cheese sauce steps 1-6

To prepare cheese sauce

  1. In a large skillet, heat butter and saute green onions for 3-5 minutes.
  2. Pour cream into skillet and stir to mix.
  3. Add cheeses, stirring to melt.
  4. Add green chiles.
  5. Stir and pour over coated chicken.

Chicken Fiesta Casserole baked

  1. Bake. When you serve the chicken, make sure when you dish it out with all that yummy cheese sauce!

Chicken Fiesta plated closeup

Serve with cilantro rice and black beans for a real Mexican fiesta. Psst! Don’t forget to spoon that sauce over the rice too – oh it’s so good!

Chicken Fiesta bite

Now take a bite and savor the crispy chicken that’s coated with a lightly spiced creamy cheese sauce. You’ll be going back for seconds in no time.

Frequently Asked Questions & Tips

Can I make this casserole in the morning? Yes, most certainly! This casserole can be prepared early in the day then refrigerated until dinner time. Take out 30 minutes prior to cooking to bring closer to room temperature then add 5 minutes on to cook time.

Can it be frozen? Definitely yes! I like to place mine in baggies that hold just what my husband and I can eat. Just defrost in the refrigerator and reheat in the microwave.

Pro-Tip: This recipe can be adapted to your family’s taste. Don’t like too much heat? Try subbing the jalapeno jack with Monterey Jack cheese. Don’t have Cheez-Its on hand, any cracker will do such as Ritz, or even flavored chips like Doritos.

Side dishes to complete this Cheesy Chicken Casserole dinner

Cilantro Rice from 2 Cookin Mamas – fresh cooked rice is seasoned with lime juice and tossed with cilantro for a Mexican flair.

Roasted Corn Salad from 2 Cookin Mamas – a lighter side dish featuring fresh roasted corn & a rainbow of vegetables topped with citrusy lime vinaigrette. 

Instant Pot Black Beans from My Stay at Home Adventures – start the beans mixed with seasonings and broth in the Instant Pot when you start baking this casserole and everything will be ready at the same time.

Chicken Fiesta serving to plate

More easy chicken dinners for the work week

Cheesy Cauliflower Chicken Broccoli Casserole

BBQ Chicken Bacon Bake

Chicken Cordon Bleu Shells

5 from 5 votes
Chicken Fiesta plated with cilantro rice and black beans square
Cheesy Chicken Fiesta Casserole
Prep Time
15 mins
Cook Time
45 mins
Total Time
1 hr

Cheesy Chicken Fiesta Casserole is filled with crispy coated chicken breasts and covered with a lightly spiced creamy cheese sauce. It's all packed into one easy to bake, cheesy casserole. The perfect weeknight dinner for the whole family.

Course: Main Course
Cuisine: Mexican
Keywords: cheesy chicken fiesta, chicken fiesta, chicken fiesta casserole
Servings: 6 -8 servings
Calories: 587 kcal
Author: Linda Warren
  • 1 cup Cheez-Its crumbed
  • 2 Tablespoons taco seasoning mix
  • 4 large boneless skinless chicken breasts or 8 small
  • 4 green onions chopped
  • 2 Tablespoons butter
  • 2 cups fat-free half & half
  • 1 cup Pepper Jack shredded
  • 1 cup sharp cheddar cheese shredded
  • 1 can 4 oz chopped green chiles, do not drain
  1. Preheat oven to 350 degrees. Prepare a 13x9x2-inch baking dish by spraying with a non-stick spray.
  2. Crumb Cheez-Its by placing into large ziploc bag and seal. Using a rolling pin, just roll over it in different directions until there are only fine crumbs left. You can also save time by grinding it in a small chopper. I like the Ninja Chopper, works well and easy to clean.
  3. Mix crumbed mixture with the taco seasoning in the same bag.
  4. Place the chicken pieces, one at a time, in the bag and shake to coat.
  5. Place chicken into prepared pan in a single layer. I like to pat the remaining seasoned crumbs left in the bag onto the chicken.
  6. In a medium skillet, melt butter and sauté green onions until tender.
  7. Stir in half & half, cheeses and green chiles.
  8. Pour over chicken then place in oven, uncovered, and bake for 45 minutes.
Nutrition Facts
Cheesy Chicken Fiesta Casserole
Amount Per Serving
Calories 587 Calories from Fat 243
% Daily Value*
Fat 27g42%
Saturated Fat 12g60%
Cholesterol 160mg53%
Sodium 901mg38%
Potassium 775mg22%
Carbohydrates 34g11%
Fiber 1g4%
Sugar 4g4%
Protein 47g94%
Vitamin A 685IU14%
Vitamin C 4.2mg5%
Calcium 418mg42%
Iron 1mg6%
* Percent Daily Values are based on a 2000 calorie diet.




Crispy coated chicken breasts are covered with creamy cheese sauce in this easy Mexican-inspired Cheesy Chicken Fiesta Casserole recipe. A weeknight casserole the whole family will enjoy! #dinner #chicken #chickenbreasts #casserole #cheese #easy #recipe #mexican

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  • Reply
    Tania | Fit Foodie Nutter
    03/13/2019 at 10:52 am

    5 stars
    That’s one super delicious comfort meal for the whole family! Love how easy yet delicious it is. Will be dreaming of someone cooking it for me tonight!

    • Reply
      Linda Warren
      03/13/2019 at 3:37 pm

      Now having someone to cook it for you would make this dinner even better! And I thought it was great when my husband said I could make it again any time I wanted. lol

  • Reply
    03/13/2019 at 9:54 am

    5 stars
    This recipe is so easy and has so much flavor! It’s a new go-to!

    • Reply
      Linda Warren
      03/13/2019 at 3:38 pm

      Thanks! We love it here too. It even freezes well so I put some away for when I’m just too busy to cook.

  • Reply
    Helen of Fuss Free Flavours
    03/13/2019 at 8:33 am

    5 stars
    What a great alternative to a chicken casserole. Some delicious flavours and lovely crispy coating on the chicken. A great weekend supper to look forward to.

    • Reply
      Linda Warren
      03/13/2019 at 3:39 pm

      Since we have chicken a lot, this recipe is great at dressing it up with a little Mexican flair for a change of pace.

  • Reply
    03/13/2019 at 8:17 am

    5 stars
    One pan dishes are my saving grace! I love this recipe, especially for a busy night!

    • Reply
      Linda Warren
      03/13/2019 at 3:40 pm

      Mine too! Thank goodness for quick and easy.

  • Reply
    Kelly Anthony
    03/13/2019 at 8:11 am

    5 stars
    Cheez Its are such a great idea. My kids are going to love this recipe.

    • Reply
      Linda Warren
      03/13/2019 at 3:40 pm

      Well, I’m with your kids. Cheez-Its are one of my favorite treats too. Hope they enjoy!

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