Mexican Chicken Casserole smothered in a simple sour cream, green chili and cheese sauce. The bubbly cheese sauce seals in the chicken juices so it bakes up tender, juicy and flavorful. Everyone needs an easy chicken bake for unexpected company. You won’t believe the easy sauce!

Some of our favorite recipes are Mexican-inspired like Ceviche, or Fish Tacos (the #1 recipe on our site right now). This chicken bake satisfies the craving for Mexican food.

Mexican Chicken Casserole garnished with avocado, tomato and cilantro

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Mexican Chicken:

We love easy Mexican chicken recipes. They are a fun way to explore new flavor combinations and change up your dinner routine. The green chilis give this really great flavor without being spicy. This Mexican Chicken Casserole is also a really easy party dish. The kids loved it because it was creamy, cheesy and the green chilis were very mild.

One of our readers, Judy, wrote in and shared this recipe with us and it was an instant hit. Thank you Judy! We really can’t get enough of this 3-ingredient sauce:

Ingredients for Chicken Casserole

Tips for Making Mexican Chicken Casserole:

Even though this is a crazy easy recipe, here are some pitfalls to avoid (because I know it’s super tempting to improvise with an easy recipe):

  • Don’t overload the chicken in the casserole dish. Increase everything proportionally and use a larger baking dish if scaling up the recipe.
  • Arrange Chicken in a single layer in the casserole dish – you want the sauce to cover each piece of chicken.
  • Don’t over-bake or the chicken will get dry. Remember the chicken is already cooked through.
  • Use green chilis with their juice – do not drain.

Step by step instructions for making Mexican chicken casserole

The avocado, tomato, cilantro garnish is optional but highly necessary. You can also serve this with fresh Pico de Gallo. We love this Mexican Chicken Casserole served over white rice.

Baked Mexican Chicken Casserole with fresh tomatoes and avocados on top

More Mexican-Inspired Recipes:

Watch Natasha Make Mexican Chicken:

I hope you love this easy peasy chicken bake! Let me know what are YOUR favorite Mexican foods in a comment below.

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Mexican Chicken Casserole

5 from 113 votes
Mexican Chicken Casserole on towel
Mexican Chicken Casserole smothered in a simple sour cream, green chili and cheese sauce. The bubbly cheese sauce seals in the chicken juices so it bakes up tender, juicy and flavorful.
Prep Time: 3 minutes
Cook Time: 27 minutes
Total Time: 30 minutes

Ingredients 

Servings: 8 people

Mexican Chicken Casserole:

  • 2 lbs chicken breasts, (4 small or 3 medium)
  • 1 tsp salt, or to taste
  • 1/4 tsp black pepper, or to taste
  • 8 oz shredded Mexican cheese, divided
  • 1 cup sour cream, (full fat)
  • 14 oz diced green chilis (two 7 oz can with their juice

To Serve:

  • 1 small avocado, diced
  • 1 roma tomato, diced
  • 2 Tbsp cilantro, chopped

Instructions

  • Preheat oven to 400˚F and butter a 9x13 casserole dish.
  • Cut chicken breasts in half lengthwise and season both sides with salt and pepper.
  • Place a large skillet over medium heat and add 2 Tbsp oil. Once oil is hot, add chicken in a single layer and cook about 3 minutes per side or until golden and just cooked through with an internal temperature of 165˚F. Cook chicken in 2 batches so you don’t overcrowd the pan and add more oil as needed.
  • Arrange sautéed chicken in buttered casserole dish so they are flat and not overlapping too much.
  • In a medium bowl, mix together 2/3 of your Mexican cheese, 1 cup sour cream and 2 cans of green chilis with their juice. Pour over chicken. Sprinkle the top with 1/3 remaining cheese and bake uncovered at 400˚F for 15 min or until cheese is melted and sauce is bubbling at the edges.
  • Serve garnished with diced avocado, tomatoes and chopped cilantro.

Nutrition Per Serving

338kcal Calories6g Carbs32g Protein21g Fat9g Saturated Fat114mg Cholesterol842mg Sodium680mg Potassium3g Fiber2g Sugar570IU Vitamin A22.2mg Vitamin C245mg Calcium1.4mg Iron
Nutrition Facts
Mexican Chicken Casserole
Amount per Serving
Calories
338
% Daily Value*
Fat
 
21
g
32
%
Saturated Fat
 
9
g
56
%
Cholesterol
 
114
mg
38
%
Sodium
 
842
mg
37
%
Potassium
 
680
mg
19
%
Carbohydrates
 
6
g
2
%
Fiber
 
3
g
13
%
Sugar
 
2
g
2
%
Protein
 
32
g
64
%
Vitamin A
 
570
IU
11
%
Vitamin C
 
22.2
mg
27
%
Calcium
 
245
mg
25
%
Iron
 
1.4
mg
8
%
* Percent Daily Values are based on a 2000 calorie diet.
Course: Main Course
Cuisine: Mexican
Keyword: mexican chicken casserole
Skill Level: Easy
Cost to Make: $
Calories: 338
Natasha's Kitchen Cookbook

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5 from 113 votes (67 ratings without comment)

Leave a Comment

Recipe Rating




Comments

  • Mahmoud Fawaz
    November 7, 2020

    Can I substitute green chilis with jalapeños?

    Reply

    • Natashas Kitchen
      November 7, 2020

      That should work great!

      Reply

  • Mahmoud Fawaz
    November 5, 2020

    I have a question regarding the Mexican chicken casserole. From where I’m from, it’s hard to find green chilies. Is it possible for me to replace the green chilies with green enchilada sauce?

    Reply

    • Natasha
      November 5, 2020

      Hi, without testing that it’s hard to say for sure. It would change the flavor profile and consistency of the sauce.

      Reply

      • Mahmoud Fawaz
        November 7, 2020

        Would jalapeños be a better substitute?

        Reply

        • Natashas Kitchen
          November 7, 2020

          Hi Mahmoud, jalapenos would work!

          Reply

  • Lori
    November 2, 2020

    I made this tonight and even my picky eater liked it! It was so easy to make too! Thanks so much for sharing this recipe!

    Reply

    • Natashas Kitchen
      November 2, 2020

      That is the best when kids love what we moms make. That’s so great!

      Reply

  • Diane Mitchell
    November 1, 2020

    Would it be Possible to make this in a 12 inch cast-iron pan and just add the additional ingredients and put it in the oven to cook instead of a 9 x 13?

    Reply

    • Natashas Kitchen
      November 2, 2020

      Hi Diane, I haven’t tested that but I imagine that should work! If you test it out I would love to know how you like that.

      Reply

  • Keisha McLeod
    October 29, 2020

    Big hit with my family!! So good and flavorful my daughter said this is definitely a regular dish for us.

    Reply

    • Natashas Kitchen
      October 29, 2020

      Awww that’s the best! Thank you so much for sharing that with me.

      Reply

      • Keisha mcleod
        November 10, 2020

        Your the best I’ve tried at least five of your recipes! I look forward to anything you post I’ve been following you for the last five years🥰

        Reply

        • Natasha's Kitchen
          November 10, 2020

          That is so heartwarming, thank you for your support, Keisha. We really appreciate you for sticking with us for the last 5 years!

          Reply

  • shirlyne
    September 20, 2020

    Love love love this. Was a big hit. Easy and cost effective. Thanks

    Reply

    • Natasha's Kitchen
      September 21, 2020

      I’m glad you loved this recipe!

      Reply

  • Carmen Orrego
    September 4, 2020

    I made this for dinner last night and it was great! thank you for another great recipe!

    Reply

    • Natashas Kitchen
      September 4, 2020

      You’re welcome! I’m so glad you enjoyed that!

      Reply

  • LaToya
    August 29, 2020

    Hi Natasha, I plan on making this dish tomorrow for my family for dinner. This seems really easy and I hope it comes out amazing/tasty.

    Reply

    • Natashas Kitchen
      August 29, 2020

      I hope you love this recipe LaToya!

      Reply

  • Jeanette Holden
    August 11, 2020

    We loved this recipe. My full fat sour cream sorta curdled and it made the presentation not so good. Help.

    Reply

    • Natashas Kitchen
      August 12, 2020

      Hi Jeanette, I’m more than happy to troubleshoot although I haven’t had this experience. Was anything altered in this recipe by chance?

      Reply

  • Yuri Clingerman
    July 30, 2020

    Hi Natasha, I made this today but noticed that it actually needed 2 cups (8 oz) AND an additional 1 cup of Mexican cheese. I only bought a 8 oz bag but fortunately I had some extra mozzarella cheese so threw that over the sauce. You may want to correct that in the ingredients list. Regardless it was delicious with a side of buttered rotelli pasta.

    Reply

    • Natasha
      July 31, 2020

      Thank you for pointing that out. I used a total of 8 oz of Mexican cheese and used 2/3 of it for the sauce and 1/3 for the topping. I clarified the instructions.

      Reply

      • Debby parker
        November 2, 2020

        Hi Natasha,
        Your Mexican chicken casserole is delicious! Also, I bought a cuisinart air fryer as you recommended. Love it! Thank you!

        Reply

        • Natasha's Kitchen
          November 3, 2020

          That is awesome, thank you! Enjoy your new air fryer and I hope you love every recipe that you try.

          Reply

  • Tammy Ledlow
    July 27, 2020

    I made the Mexican Chicken Casserole and even my very picky 5 yr old grandson loved it. Thank you

    Reply

    • Natasha's Kitchen
      July 28, 2020

      You are so welcome and I am so glad to hear that!

      Reply

  • Matt
    July 26, 2020

    Love the Mexican Chicken Casserole, hug I can’t find the link to the grease splash guard. Please post it. Thank you 😊

    Reply

    • Natasha's Kitchen
      July 26, 2020

      Thanks for your great feedback, Matt. Please check out our Amazon Store here as you will see the splash guard there and all the other equipment that I use.

      Reply

  • Karyn Hendricks
    July 16, 2020

    Really tasty! I cut the chicken into thin strips and then served it with flour tortillas and shredded iceberg lettuce for a sort of taco.

    Reply

    • Natashas Kitchen
      July 16, 2020

      Yum! So so good! thank you for sharing that with me!

      Reply

  • Kim
    June 30, 2020

    Is this recipe Keto friendly ???

    Reply

    • Natasha's Kitchen
      July 1, 2020

      Hi Kim, I haven’t really tried making this keto-friendly and I am not so sure. You may check the ingredients in the recipe card to check.

      Reply

  • Diana
    June 28, 2020

    Can I bake the chicken raw, covered in the sauce? I think if I bake at 350 for 30-40 minutes I should be good, right?

    Reply

    • Natashas Kitchen
      June 29, 2020

      Hi Diana, I haven’t tested it that way. If you experiment I would love to know how you like that!

      Reply

    • DC
      July 16, 2021

      I would think so, but you may want to cook just one side and put the uncooked side on the bottom down in the dish and then go 30 min (and maybe a hair hotter than 350)

      Reply

  • Jonica
    June 13, 2020

    I made this recipe for the first time tonight and the family loved it. I added 2 ears of corn cut off the cob, a can of rinsed black beans and an additional 1/4 cup sour cream. Next time I will drain some of the juice off of the green chilies.

    Reply

    • Natasha's Kitchen
      June 14, 2020

      Thanks for sharing that with us, Jonica. So great to hear that your family enjoyed this recipe!

      Reply

  • Jenny
    May 29, 2020

    Tried it tonight and it was a huge success with the fam!

    Reply

    • Natashas Kitchen
      May 29, 2020

      I’m so glad you enjoyed it!

      Reply

  • Phyllis
    May 20, 2020

    I did make this & I seasoned the chicken w/taco seasoning instead of the S&P. I also used 1-10 oz. can Rotel fire roasted tomatoes and green chilies & a 4 oz. can medium green chilies. It was delicious. With tomorrow’s leftovers I’m making rice to go with it.

    Reply

    • Natashas Kitchen
      May 20, 2020

      I’m so happy you enjoyed that. Thank you for sharing that with us!

      Reply

  • Phyllis
    May 18, 2020

    I’m going to make this tomorrow. I plan to season the chicken with taco seasoning. I enjoy all your videos because they’re so doable, especially for people like me who don’t love to cook. My favorite thing to make is reservations but I’ve tried several of your recipes, most recently cheesecake. It was great!

    Reply

    • Natashas Kitchen
      May 18, 2020

      I’m so happy you enjoyed that. Thank you for sharing that with us!

      Reply

  • Olga
    May 10, 2020

    What can you substitute the green chiles with?

    Reply

    • Natasha's Kitchen
      May 11, 2020

      Hi Olga, someone shared this “I sub out green chiles for a can of Rotel. Family loves it even our 4 year old”. I hope that helps!

      Reply

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