Shredded chicken, mushrooms and spinach baked in an Alfredo type sauce and topped with gooey mozzarella cheese make this casserole hearty and satisfying!
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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!
What's in Keto Chicken Florentine Casserole
- Chicken
- Mushrooms
- Frozen spinach
- Heavy cream
- Mascarpone cheese
- Parmesan cheese
- Mozzarella cheese
- Garlic
- Grass-fed butter
- Salt and pepper
*Exact measurements are listed in the recipe card below.
How to Make Keto Chicken Florentine Casserole
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
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Keto Chicken Florentine Casserole
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
*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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QT618
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!
Keto Cooking Christian
Awesome, glad everyone loved it!
Lu416
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
Keto Cooking Christian
Absolutely, I do it all the time with my casseroles, if I'm short on time!
Marcelle
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!
Keto Cooking Christian
Sounds wonderful, glad you enjoyed it!
Jess
So good! I sautéed fresh spinach and mushrooms as suggested in the notes. I even posted to my Instagram @ketolifestylewithjess
Keto Cooking Christian
That's wonderful and yes, I saw the pic of your casserole on IG, very nice!! Glad you enjoyed it 🙂
Donyell
Hello
Can this recipe be done in a slow cooker/crockpot?
Toni
How much is one serving? I'm assuming it's one cup but it's not listed.
Keto Cooking Christian
I honestly don't have it measured out, but it's 1/8th of the entire recipe.
Sybille Seidel
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
Keto Cooking Christian
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 🙂
Ashley
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.
Keto Cooking Christian
Awesome! Glad to hear you were able to substitute the mascarpone and still enjoyed it!
DoonieInOregon
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 for my hubby. Used a cup and half of cream so it was a bit more saucy which we enjoyed.
Thanks for the great recipe! We will make it again.
Keto Cooking Christian
Glad you both enjoyed the casserole and thanks for sharing your modifications!
Dawn
What sides would be good with this? Could I put it over pasta??
Keto Cooking Christian
Hi Dawn,
Pasta wouldn't be Keto or Low Carb. I would recommend something light like a salad.
Trudi G
Hi! Do u have to add the mushrooms?
Keto Cooking Christian
Hello! If you don't care for mushrooms, you can omit them if you want.
Kathy
Can I use fresh mushrooms and fresh spinach instead? Also, would cream cheese work in place of the mascarpone?
Thank you, Kathy
Keto Cooking Christian
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!
Cindy
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?
Keto Cooking Christian
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!
Cindy
It was delicious, we all loved it.
Keto Cooking Christian
Fantastic! Thanks for coming back to let me know. Glad you liked it 🙂
Darcie
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!!!
Keto Cooking Christian
Thank you for the wonderful feedback! I'm so glad you like it, I make it all the time too 🙂
Michele
Excellent! Just made this for dinner and it is a home run!
Keto Cooking Christian
It's actually one of my favorite casseroles! I'm glad to hear that you enjoyed it 🙂