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Home / Recipes / Main Course / Chicken Florentine Casserole - Keto and Low Carb

Chicken Florentine Casserole - Keto and Low Carb

August 14, 2018 by Keto Cooking Christian 33 Comments

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Shredded chicken, mushrooms and spinach baked in an Alfredo type sauce and topped with gooey mozzarella cheese make this casserole hearty and satisfying!

Chicken Florentine Casserole - Keto and Low Carb

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This is one of my very favorite casseroles to make!  If you need a last minute Low Carb dinner recipe, this Chicken Florentine casserole can be made with ingredients you might already have on hand! 

One of the best things about casseroles, is they are typically very easy to put together and often have a fair amount of servings.  This is great for anyone who struggles with meal prepping and having enough Keto meals on hand.

When you bake this chicken florentine, your kitchen is going to smell amazing!!  You will find yourself making this one again and again!  It also freezes perfectly, so don't let your leftovers go to waste!

How to Make Keto Chicken Florentine Casserole

Ingredients

  • Shredded chicken
  • Mushrooms
  • Frozen spinach
  • Heavy cream
  • Mascarpone cheese
  • Parmesan cheese
  • Mozzarella cheese
  • Garlic clove
  • Grass-fed butter
  • Salt and pepper

*Exact measurements are listed in the recipe card below.

Preparation

Preheat oven to 375F.

Add the shredded chicken to a large bowl.

Then the mushrooms.

Squeeze all the water out of the spinach, then add to the bowl with the chicken and mushrooms.

Heat a saucepan to medium and melt the butter.

Sauté the garlic for about 20 seconds, careful not to brown!

Mix in the heavy cream.

Stir in the mascarpone cheese, until melted.

Add in the grated parmesan cheese, salt and pepper.  Turn off the heat and stir.

Pour the sauce over the bowl with the chicken, mushrooms and spinach.

Mix, then add ½ cup of the mozzarella cheese and stir until well combined.

Pour into a 9" x 9" casserole dish that has been sprayed with nonstick spray.

Sprinkle the remaining 1 cup of mozzarella cheese over the top and bake for 25 minutes.

Turn the temperature up to 425F and bake for an additional 10 minutes or until the cheese is melted and golden.

Allow to cool slightly before serving.  Store leftovers in the fridge for a few days or freeze.

Note: I used canned mushrooms in this recipe (something I rarely do), as a time-saver.  Feel free to use fresh mushrooms, but be sure to sauté them first, then add them to the casserole.  

The same is true of the spinach.  I used frozen spinach, but you can certainly use fresh, sauté first and add to the casserole.

More Keto and Low Carb casseroles...

Chicken Parmesan Casserole

Loaded Creamy Cauliflower Casserole

Chicken Cordon Bleu Casserole

Easy Sausage and Pepper Breakfast Casserole

Chicken Broccoli Casserole

Chicken Alfredo Casserole

Chicken Florentine Casserole - Keto and Low Carb

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Chicken Florentine Casserole - Keto and Low Carb

Chicken Florentine Casserole - Keto and Low Carb

Shredded chicken, mushrooms and spinach are baked in an Alfredo type sauce and topped with gooey mozzarella cheese. Familar ingredients and so easy to make!
5 from 8 votes
Print Save Saved! Review
Prep Time 5 mins
Cook Time 35 mins
Total Time 40 mins
Author: Julianne
Course: Main Course
Calories: 412
Servings: 8

INGREDIENTS

  • 14 ounces shredded chicken
  • 8 ounces chopped mushrooms, (see notes)
  • 9 ounces frozen spinach, thawed (see notes)
  • 1 cup heavy cream
  • ½ cup mascarpone cheese
  • 1 cup parmesan cheese, grated
  • 1 ½ cups shredded mozzarella cheese, divided
  • 2 garlic cloves, minced
  • 2 tablespoons grass-fed butter
  • salt and pepper to taste

INSTRUCTIONS

  • Preheat oven to 375F. Add the shredded chicken to a large bowl. Add in the mushrooms. Squeeze all the water out of the spinach, then add to the bowl with the chicken and mushrooms.
  • Heat a saucepan to medium and melt the butter.  Add in the garlic and sauté for about 20 seconds, careful not to brown!  Add in the heavy cream and stir.
  • Add in the mascarpone cheese, and stir until melted.  Add in the grated parmesan cheese, salt and pepper.  Turn off the heat and stir.
  • Pour the sauce over the bowl with the chicken, mushrooms and spinach.  Mix, then add ½ cup of the mozzarella cheese and stir until well combined.
  • Pour into a casserole dish that has been sprayed with nonstick spray.  Sprinkle the remaining 1 cup of mozzarella cheese over the top and bake for 25 minutes.
  • Turn the temperature up to 425F and bake for an additional 10 minutes or until the cheese is melted and golden.  Allow to cool slightly before serving.  Store leftovers in the fridge for a few days or freeze.

RECIPE NOTES

I used canned mushrooms in this recipe (something I rarely do), as a time-saver.  Feel free to use fresh mushrooms, but be sure to sauté them first, then add them to the casserole.  The same is true of the spinach.  I used frozen spinach, but you can certainly use fresh, sauté first and add to the casserole.

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Nutrition Facts
Chicken Florentine Casserole - Keto and Low Carb
Amount Per Serving
Calories 412 Calories from Fat 297
% Daily Value*
Fat 33g51%
Saturated Fat 21g131%
Carbohydrates 4g1%
Fiber 1g4%
Sugar 2g2%
Protein 26g52%
* Percent Daily Values are based on a 2000 calorie diet.
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*Nutritional data is provided as a courtesy and is accurate to the best of my knowledge. You can verify it using the nutrition calculator of your choice. All data is based on net carbs, without sugar alcohol- Swerve, Erythritol, Allulose, or Monk Fruit.
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Filed Under: Casseroles, Chicken, Main Course, Most Popular, Posts, Recipes Tagged With: best keto recipes, best low carb recipes, chicken casseroles, easy keto recipes, easy low carb recipes, gluten free recipes, keto, keto casseroles, keto diet, keto recipes, ketogenic diet, low carb casseroles, low carb recipes

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33 Comments
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QT618
June 20, 2020 10:24 pm

5 stars
This was great! I used fresh mushrooms and spinach which I cooked down. I cut a little over a pound of raw chicken breasts into bite sized chunks and followed the rest of the recipe as written. Everyone loved it and there were no leftovers! Served over rice for the non-keto eaters. Definitely will make again!

Reply
Author
Keto Cooking Christian
June 21, 2020 9:19 am
Reply to  QT618

Awesome, glad everyone loved it!

Reply
Lu416
March 21, 2020 9:39 pm

Could you use a rotisserie chicken.: Besides just being quicker it’s very hard to find chicken during this time. No stores seem to have

Reply
Author
Keto Cooking Christian
March 21, 2020 11:17 pm
Reply to  Lu416

Absolutely, I do it all the time with my casseroles, if I'm short on time!

Reply
Marcelle
February 23, 2020 12:36 pm

5 stars
I made this using fresh mushrooms and spinach and also added some halved cherry tomatoes. This has become a "Keto Keeper" in my household! SOOOO tasty!

Reply
Author
Keto Cooking Christian
February 26, 2020 9:42 pm
Reply to  Marcelle

Sounds wonderful, glad you enjoyed it!

Reply
Jess
January 8, 2020 10:35 pm

5 stars
So good! I sautéed fresh spinach and mushrooms as suggested in the notes. I even posted to my Instagram @ketolifestylewithjess

Reply
Author
Keto Cooking Christian
January 8, 2020 10:54 pm
Reply to  Jess

That's wonderful and yes, I saw the pic of your casserole on IG, very nice!! Glad you enjoyed it 🙂

Reply
Donyell
January 2, 2020 8:40 pm

Hello
Can this recipe be done in a slow cooker/crockpot?

Reply
Toni
October 3, 2019 7:21 pm

How much is one serving? I'm assuming it's one cup but it's not listed.

Reply
Author
Keto Cooking Christian
October 3, 2019 8:17 pm
Reply to  Toni

I honestly don't have it measured out, but it's 1/8th of the entire recipe.

Reply
Sybille Seidel
October 1, 2019 10:26 am

5 stars
Can I sub Turkey for the chicken and would I have to adjust the recipe
Loved it with the chicken but Turkey season is almost here and I love it too

Reply
Author
Keto Cooking Christian
October 1, 2019 10:31 am
Reply to  Sybille Seidel

Yes, you absolutely can and I would sub 1:1, so no adjustment would be needed. Great idea, thank you! I might have to try that myself with some leftovers 🙂

Reply
Ashley
September 25, 2019 12:41 pm

5 stars
This is definitely a very good recipe . I did have to replace the mascarpone ( I couldn’t get it ) with cottage cheese and it was so delicious.

Reply
Author
Keto Cooking Christian
September 25, 2019 12:52 pm
Reply to  Ashley

Awesome! Glad to hear you were able to substitute the mascarpone and still enjoyed it!

Reply
DoonieInOregon
August 7, 2019 10:13 pm

This is sooooo yummy! My husband is doing keto but I am not (5 mo pregnant) and this was great for both of us. I took a smaller serving and served it over whole wheat pasta. He enjoyed his over steamed broccoli and cauliflower. My modifications; Used a Costco chicken to cut down on prep time. Upped the garlic to three large cloves (we love garlic!). Sautéed a mix of fresh crimini and shiitake mushrooms we had on hand along with a bag of fresh spinach. I also crumbled just a few crunchy pieces of bacon on top for texture… Read more »

Reply
Author
Keto Cooking Christian
August 8, 2019 8:58 am
Reply to  DoonieInOregon

Glad you both enjoyed the casserole and thanks for sharing your modifications!

Reply
Dawn
May 13, 2019 10:18 am

What sides would be good with this? Could I put it over pasta??

Reply
Author
Keto Cooking Christian
May 13, 2019 3:05 pm
Reply to  Dawn

Hi Dawn,
Pasta wouldn't be Keto or Low Carb. I would recommend something light like a salad.

Reply
Trudi G
May 8, 2019 8:04 pm

Hi! Do u have to add the mushrooms?

Reply
Author
Keto Cooking Christian
May 8, 2019 8:26 pm
Reply to  Trudi G

Hello! If you don't care for mushrooms, you can omit them if you want.

Reply
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February 20, 2019 5:10 pm

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Reply
Kathy
January 28, 2019 5:02 am

Can I use fresh mushrooms and fresh spinach instead? Also, would cream cheese work in place of the mascarpone?
Thank you, Kathy

Reply
Keto Cooking Christian
January 28, 2019 9:29 am
Reply to  Kathy

Hi Kathy, yes to all 3 substitutions, they should all work just fine! With the fresh spinach and mushrooms, I would definitely sauté them before mixing it into the mixing bowl with the other ingredients prior to baking. This will get all the water out so the casserole will hold together and won't be watery. I hope that helps!

Reply
Cindy
November 29, 2018 2:35 pm

This looks good, however in the picture, the mushrooms that added to the chicken look to be canned. If I use fresh mushrooms, what adjustments do you suggest I make?

Reply
Keto Cooking Christian
November 29, 2018 2:42 pm
Reply to  Cindy

Hi Cindy,
I almost never used canned mushrooms, but I decided to in order to make this a really quick and easy casserole to put together. I can certainly understand wanting to use fresh instead, so I would sauté them before adding them to the mixture. This will get them to release most of their moisture that you can discard, and won't make the casserole watery. I hope that helps!

Reply
Cindy
December 4, 2018 7:09 pm
Reply to  Keto Cooking Christian

It was delicious, we all loved it.

Reply
Keto Cooking Christian
December 4, 2018 8:00 pm
Reply to  Cindy

Fantastic! Thanks for coming back to let me know. Glad you liked it 🙂

Reply
Darcie
October 22, 2018 1:52 pm

5 stars
This is my absolute all time favorite casserole recipe! So much flavor and extremely easy to make. I have made 3 times and it is my go-to recipe. I make it on Sunday and it last all week for work. It heats up beautifully and the flavor never leaves! I recommend this to anyone for an easy meal for the family or just portion for lunches. So delectable!!!

Reply
Keto Cooking Christian
October 22, 2018 2:05 pm
Reply to  Darcie

Thank you for the wonderful feedback! I'm so glad you like it, I make it all the time too 🙂

Reply
Michele
October 17, 2018 7:24 pm

5 stars
Excellent! Just made this for dinner and it is a home run!

Reply
Keto Cooking Christian
October 17, 2018 7:30 pm
Reply to  Michele

It's actually one of my favorite casseroles! I'm glad to hear that you enjoyed it 🙂

Reply

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Keto Cooking Christian

I'm Julianne, welcome!  Eating healthy doesn't mean you have to sacrifice great flavor.  I offer tasty and indulgent Keto & Low Carb recipes that will never leave you feeling deprived! More about me...

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