This easy keto Mexican chicken casserole is so rich and tasty it will be sure to warm you on a cold day. Full of cheesy Mexican flavor, you can throw this low carb dinner together in minutes and then just bake it. This chicken casserole is keto comfort food that has only 6g net carbs per serving.
You might also like this popular keto buffalo chicken casserole recipe.

The weather is getting colder and that means casserole time for me. I wanted to make a new recipe for the blog so I made this super duper easy keto Mexican chicken casserole.
OMG just looking at these pictures makes me wished I had some leftovers. It was rich, cheesy and full of chicken so it’s filling too. Perfect keto comfort food.

Only 7 Casserole Ingredients
The ingredients I used for this casserole were cooked chicken breast, cream cheese, cauliflower rice, salsa, Mexican cheese, chili powder and cumin.
This is definitely a leftover rotisserie chicken recipe. It will only take a few minutes to mix everything then all you have to do is bake it!
TIP: I often buy 2 rotisserie chickens when I go to Costco because they are inexpensive and relatively big. I take all the meat off the chickens and portion 1 cup servings into ziplock bags. Then I freeze them for dishes like this. Save the bones to make chicken broth!

Let’s Make The Keto Mexican Chicken Casserole
- Add the cream cheese and salsa to bowl and microwave for a minute or two to soften the cream cheese. Add the spices and mix together well.
- In a large bowl mix the cream cheese mixture, chicken and half of the cheese. Spoon into a sprayed casserole dish.
- Top the casserole with the remaining cheese and bake for 30 minutes until browned on top.

More Keto Recipes Using Rotisserie Chicken
I have quite a few recipes on this blog that uses rotisserie chicken. You can use it to stuff peppers, in low carb soups, buffalo chicken dips, casseroles and even chicken salads.





Recipe Tips & Notes
- I use chunky salsa from Aldi which had a lot of carbs and accounts for most of the carbs in this recipe. If you have a lower carb brand go ahead and use that. This is the main source of Mexican flavors. I have an awesome keto salsa recipe but I didn’t want you to have to make that first so I used jarred salsa.
- I bought my Mexican cheese blend from Costco and it was delicious and low carb. Again try to find the lowest brand you can or grate your own cheddar and Monterey Jack cheeses.
- This is the perfect recipe to freeze for a low carb lunch. Just portion out the leftovers and place in a freezer container. Microwave for a few minutes to reheat.

Well I must say this was one of my favorite recipes lately. It was so easy and comforting. I hope you enjoy it as well.

The nutritional information for 1 serving is 364 calories and:
18.5g fat / 7g carbs / 1g fiber / 39.7g protein = 6g net carbs

Keto Mexican Chicken Casserole
This easy keto Mexican chicken casserole is so rich and tasty it will be sure to warm you on a cold day. Full of cheesy Mexican flavors you can throw this low carb dinner together in minutes and then just bake it. This chicken casserole is keto comfort food that has only 6g net carbs per serving.
Ingredients
- 4 cups chopped cooked chicken breast
- 2 cups cauliflower rice
- 4 oz cream cheese
- 1 cup salsa*
- 8 oz shedded cheese (Mexican or cheddar)*
- 1 teaspoon chili powder
- ½ teaspoon cumin
Instructions
- Preheat oven to 400°F. Then spray a baking dish with cooking spray.
- Add cream cheese and salsa to bowl and microwave for a minutes or two to soften the cream cheese. Take it out and add the spices and mix well.
- In a large mixing bowl add the cauliflower rice, cream cheese mixture, chicken and half of the cheese. Mix well and spoon into baking dish.
- Top with the other half of the cheese and bake for 30 minutes to brown and bubbly. If after 30 minutes it's not browned enough for your liking on top, you put it under the broiler for a few minutes.
Notes
The nutritional information for 1 serving is 364 calories and:
18.5g fat / 7g carbs / 1g fiber / 39.7g protein = 6g net carbs
Recipe Tips and Notes
- I used chunky salsa from Aldi which had a lot of carbs and accounts for most of the carbs in this recipe. If you have a lower carb brand go ahead and use that. This is the main source of Mexican flavors. I have an awesome keto salsa recipe but I didn't want you to have to make that also so I used jarred salsa.
- I bought my Mexican cheese blend from Costco and it was delicious and low carb. Again try to find the lowest brand you can or grate your own cheddar and Monterey Jack cheeses.
- This is the perfect recipe to freeze for a long carb lunch. Just portion out the leftovers and place in a freezer container. Microwave for a few minutes to reheat.
Nutrition Information:
Yield: 6 Serving Size: 1Amount Per Serving: Calories: 364

Christina
Hi there! This sounds delicious. What size baking dish do you use?
Denise
Hi Christina, it’s a 8x10inch casserole dish. It says 2.8 liters on the bottom. Hope that helps and you like it!
Becky
Ever since going low carb I have found layered foods are the best! I am always looking for new things to deconstruct and make a low carb/layered casserole with. I use the low carb tortillas from Aldi (much cheaper that alternatives) and then layer them like a lasagna but with endless possibilities for fillings. this adds a couple more carbs but makes you feel like you are having something structured instead of just filling with cheese on top and since I do a 16/8 fast I have a filling meal and it stays within my carb limit
I make a pizza casserole, a cheese coney casserole an a Philly cheese casserole that are big winners at my house this will be a great alternative to my beef enchiladasagna!
Denise
Hi Becky, great ideas! I’ll have to give it a try. I buy those tortillas too (love Aldi) so I’ll be creative with them!
Jennifer Lorden
Do you use fresh, raw cauliflower rice or frozen?
Denise
Hi Jennifer, I usually make my own by just adding cauliflower to a food processor and pulsing until it looks like rice. That being said you could use any kind of cauliflower rice you want. Just don’t cook it first. And if using frozen, let it thaw a bit and drain any excess water before adding to the casserole. Hope that helps and you like it!
Barbara
I already submitted a review, but just wanted to say that this is a delicious recipe, and easy to fix quickly for company. I use Costco’s grilled chicken that comes cut up in chunks/strips and is found in the freezer section. We don’t have Aldi’s so I used Rotel instead, and will probably add fresh cilantro to the sauce.
It’s a great recipe to take camping, as well. We just reheated it in our oven (you could microwave but I prefer not to) and I served it with tortilla chips for my non-low-carb hubby and pork rinds for myself.
Denise
Hi Barbara, so glad you liked it! Thanks for coming back to comment and share you tips and tricks! Have a good weekend.