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Creamy Spinach Chicken Casserole {in 30 minutes!}

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Looking for a spinach and chicken recipe for dinner? This creamy spinach chicken casserole made with cream cheese and mozzarella is easy, keto and low-carb friendly.

baked chicken creamed spinach
a simple and flavorful casserole

On busy weeknights, my family and I prepare everything from chicken egg roll bowls to chicken salads. But, this low carb spinach chicken casserole bake is our absolute favorite comfort food recipe.

How do I prepare spinach chicken casserole?

This easy chicken recipe can be made in three easy steps.

  1. Bake Chicken
  2. Add spinach cream cheese topping, then add mozzarella cheese to top it off
  3. Bake again
chicken casserole with spinach red pepper flakes

What are things I can make with leftover spinach chicken casserole? 

Leftovers from this recipe can be easily served over a bed of cauliflower rice or with a side salad.

creamy cheese pull

How do I make chicken stuffed with creamed spinach?

If you prefer stuff in your chicken with a spinach cream cheese mixture, simply add the filling prior to baking. 

You may top the chicken with leftover filling. 

top it with red pepper flakes

How many calories does spinach chicken casserole have? 

This recipe has 520 calories. 

How many carbs does spinach chicken casserole have? 

This recipe has 6 grams carbohydrates making it an excellent choice for a healthy keto/low carb diet.

spinach cheese chicken casserole

How many carbs are in chicken breasts?

Chicken breasts have no carbs. 

How long will spinach chicken casserole keep in the fridge? 

This dish will last up to three days in a sealed airtight container in the refrigerator.

creamy chicken spinach dish

Can I freeze spinach chicken casserole? 

Once cooked, this dish may be sealed in an airtight freezer bag for up to three months. 

To reheat, thaw overnight in the refrigerator then placed back into the oven for 20-25 minutes at 350°F. 

How to make spinach chicken casserole in the slow cooker?

For the slow cooker, I recommend using smaller chicken breasts.

  1. Layer the bottom of your slow cooker/crockpot with a few slices of butter. Top with chicken breasts.
  2. Cook on low for 3 hours, then add cream cheese and spinach for the remaining 1-2 hours.
  3. Mix the melted cream cheese with the spinach on top of the chicken and add extra mozzarella/red pepper flakes (optional). 
creamy chicken spinach casserole

What can I substitute for chicken? 

If you do not have chicken breast, chicken tenderloins, chicken thighs, or turkey breast will work well for this healthy recipe.

What can I substitute for spinach? 

If you do not have spinach, zucchini noodles, broccoli or cauliflower will work nicely for this recipe.

close up baked creamy spinach over chicken

FAQ

What can I add to chicken casserole? 

  • More of your favorite veggies (broccoli, cauliflower, carrots, mushrooms)
  • Cajun seasonings
  • Poblano, bell jalepeño peppers
close up of cream cheese, spinach and melted cheese on top of chicken breasts

How to Save Time

Save time with this recipe by using pre-cooked or leftover shredded chicken, like rotisserie chicken or shredded chicken breasts.

chicken with creamed spinach

Can I make it in the Instant Pot?

Yes, begin by pressure cooking chopped chicken for 5 minutes (high pressure). 

Natural release for at least 7 minutes, then add in cream cheese and spinach. 

Keep warm for 5 minutes, then stir.

topping with mozzarella cheese

Can I use frozen spinach?

Yes, just thaw out by warming in hot water for about 30 minutes or on the stovetop in boiling water, then drain before using.

How do I get my mozzarella cheese to brown in a casserole?

Broil your casserole for 2-3 minutes, checking frequently

Lastly, only salt your chicken after it’s out of the oven, so it won’t dry out too much.

cheese pulling from chicken being lifted out of pan

Additions/Substitutions

Instead of using spinach and cream cheese, you may want to try:

  • broccoli, cauliflower and cream cheese chicken casserole
  • poblano peppers, cream cheese and bacon with baked chicken
  • sautéed onions added to creamed mushrooms atop baked chicken

Best sides for this recipe

The best side dishes for spinach chicken casserole include:

  • Salad
  • Extra low-carb veggies, like green beans / zucchini chips
  • A few slices of tomato with salt and pepper
chicken spinach casserole

Creamy Spinach Chicken Casserole

It doesn't get easier than this easy spinach chicken casserole made with cream cheese and mozzarella cheese. A true time-saver and simple weeknight dinner even the pickiest eaters will love!
4.17 from 37 votes
Print Pin Rate
Course: Main Course
Cuisine: American, French
Prep Time: 7 minutes
Cook Time: 30 minutes
Total Time: 37 minutes
Servings: 4
Calories: 520kcal
Author: Amber @ Low Carb Quick

Ingredients

  • 2 tbsp butter
  • 4 chicken breasts medium, or large cut into half sections
  • 8 oz cream cheese
  • ½ tsp salt + more if preferred
  • 1 tbsp pepper
  • 1 tbsp garlic powder
  • 4-5 cups fresh spinach or 1 block frozen
  • 1/2 cup mozzarella cheese, shredded
  • 2 tbsp red pepper flakes

Instructions

  • Preheat oven to 350 degrees.
  • In a buttered baking dish, add chicken breasts and top with slices of butter. Bake for 15 minutes.
    chicken and butter
  • Meanwhile, heat cream cheese in microwave for 30 sec. to soften.
  • Add mozzarella, salt, pepper and garlic powder to cream cheese. Stir. Add spinach and stir, one cup at a time.
    mixing cream cheese and spinach
  • Remove chicken. Top with cheese & spinach mixture. Add red pepper flakes, and a sprinkle of mozzarella cheese if desired.
    top with red pepper flakes
  • Bake for another 15-20 minutes, or until cheese is beginning to turn golden brown.
    chicken spinach casserole

Nutrition

Calories: 520kcal | Carbohydrates: 6g | Protein: 52g | Fat: 32g | Saturated Fat: 16g | Trans Fat: 1g | Cholesterol: 222mg | Sodium: 561mg | Potassium: 1018mg | Fiber: 2g | Sugar: 2g | Vitamin A: 2190IU | Vitamin C: 3mg | Calcium: 83mg | Iron: 2mg

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Maureen

Tuesday 8th of March 2022

Delicious. Quick and easy. I didn't have chicken breast so used chicken tenders.

Amber @ Low Carb Quick

Tuesday 15th of March 2022

Thanks, Maureen!

EducatedDiner

Saturday 5th of March 2022

The recipe as currently posted, is way too salty at least for the medium grind sea salt we use. Has anyone else tried to salvage the chicken if not the sauce? Any suggestions? I’m thinking soup or a pasta dish? Maybe spaghetti squash to help soak up the salt, thin it out…

Amber @ Low Carb Quick

Saturday 30th of April 2022

Hi, I have adjusted the recipe per salt preferences. Thanks so much for taking the time to stop by!

Leslie

Thursday 3rd of March 2022

Easy to make: I used leftover chicken, and it went as timed. I agree that a tablespoon of salt is too much, and will try a teaspoon instead next time. It was good enough to make it again even with adjusting for too much salt.

CC

Monday 11th of October 2021

Can you freeze and serve layer

Amber @ Low Carb Quick

Saturday 16th of October 2021

I recommend freezing the creamed spinach mixture separately, then adding to the chicken before baking. Thanks for stopping by and checking out my recipes! -Amber

Ken

Saturday 8th of May 2021

Too salty. Should the recipe read teaspoon instead of tablespoon?

EducatedDiner

Saturday 5th of March 2022

@lowcarbquick, agree. It still says 1 tbsp salt, which is way too much. Perhaps a note as to which kind of salt being used would also be helpful. We use a sea salt, medium grind, and it made the dish almost inedible. I’m trying to figure if and how the sauce can be rescued for another purpose!

lowcarbquick

Monday 10th of May 2021

Thanks for stopping by, Ken. I have also had comments on this dish not being salty enough, so I will now be updating the notes to "salt to taste" preferences. -Amber

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