A casserole of chicken, mushrooms and spinach swimming in creamy Alfredo sauce and baked with gooey cheese on top!
FREE EASY KETO DINNERS EBOOK
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All the flavors of Alfredo sauce packed into this chicken alfredo casserole and topped with gooey melted mozzarella cheese! I add in fresh baby bella mushrooms and spinach to make this dish a complete meal with a huge boost of potassium!
It's loaded with yummy creaminess from the heavy cream, grass-fed butter, mascarpone cheese and fresh grated parmesan.
This is a super easy low carb chicken casserole that you will find yourself making again and again! And the great thing about this casserole is it makes a generous amount of servings which makes it perfect for meal prepping!
What's in Low Carb Chicken Alfredo
- Cooked chicken breasts
- Baby bella mushrooms
- Frozen spinach
- Heavy cream
- Mozzarella cheese
- Mascarpone cheese
- Parmesan cheese
- Grass-fed butter
- Chicken stock
- Olive oil
- Garlic clove
- Salt
- Fresh parsley
- Pepper
*Exact measurements are listed in the recipe card below.
How to Make Keto Chicken Alfredo Casserole
Preheat oven to 400F.
Add 1 tablespoon of butter and 1 tablespoon of olive oil to a saucepan over medium heat. Add in the mushrooms and sauté for a few minutes until they have some good color.
Remove and add a little more butter to the pan, then sauté the garlic for about 20 seconds, careful not to burn it!
Add in the rest of the butter, chicken stock, heavy cream, mascarpone cheese, salt and pepper and stir until melted. Add in the parmesan cheese and parsley, continue stirring until everything has melted.
In a large mixing bowl, add in the chicken, mushrooms and spinach.
Stir in the 1 cup of the shredded mozzarella cheese.
Pour the sauce over the top and mix to combine.
Pour the mixture into a 9" X 9" casserole or glass baking dish that has been sprayed with nonstick spray.
Spread the mixture evenly and top with the remaining mozzarella cheese and bake for 15 minutes. Increase the temperature to 425F and bake for another 10 minutes or until the cheese is golden.
Allow to cool slightly before serving. This is such a rich and delicious meal that its perfect served as a complete meal. If you want to serve with a Keto side dish, I recommend a side salad to lighten things up a little.
Store leftovers in the fridge for a few day or two.
Is Alfredo Keto?
It certainly is. Well, homemade alfredo sauce is. It is mostly cream and cheese. That is what I consider the PERFECT Keto sauce.
Can I Freeze Chicken Alfredo Casserole?
Absolutely! This casserole freezes very well. It should be noted than sometimes the dairy in casseroles will try to separate some. If that happens to you with this keto chicken casserole, give it a gentle stir to reincorporate the sauce and it will just fine.
In order to keep the casserole as fresh as possible while in the freezer, you will want to freeze it in an airtight container. If there is a lot of space between the top of the casserole and the lid, place a piece of plastic wrap directly on top of the casserole.
It will keep for up to several months.
Other Ways to Serve Keto Alfredo Sauce
Once you taste the flavors of this low carb sauce, you may want to try some of these delicious ways to serve it.
I love it over grilled shrimp and served along with Palmini Noodles or zucchini Alfredo sauce makes a great dipping sauce for these Keto Italian Breadsticks Drizzle low carb alfredo sauce over Keto Fried Chicken Tenders for a little bit of decadence.
The possibilities for this sauce is truly endless. You can serve it over any grilled veggies, like eggplant, zucchini or asparagus and it will take low carb veggies to a whole new level.
More easy Keto and Low Carb Casseroles
- Spinach Artichoke Casserole
- Chicken Parmesan Casserole
- Easy Taco Casserole
- Chicken Pot Pie Casserole
- Loaded Creamy Cauliflower Casserole
- Chicken Cordon Bleu Casserole
- Easy Sausage & Pepper Casserole
- Bacon Cheeseburger Casserole
- Chicken Florentine Casserole
FREE 20 EASY KETO RECIPES EBOOK
Keto Chicken Alfredo Casserole
Ingredients
- 16 ounces chicken breast, cooked and shredded
- 8 ounces baby bella mushrooms, sliced
- 9 ounces frozen spinach, thawed and well drained
- 2 ½ cups shredded mozzarella cheese
- 1 cup Heavy Cream
- 1 ¼ cups Mascarpone Cheese
- 1 ½ cups parmesan cheese, grated
- 4 tablespoons grass-fed butter, divided
- ¼ cup chicken stock
- 1 tablespoon olive oil
- 3 cloves garlic
- ½ teaspoon salt
- 1 tablespoon fresh parsley, chopped
- ¼ teaspoon ground pepper
Instructions
- Preheat oven to 400F. Add 1 tablespoon of butter and 1 tablespoon of olive oil to a saucepan over medium heat. Add in the mushrooms and sauté for a few minutes until they have some good color.
- Remove and add a little more butter to the pan, then sauté the garlic for about 20 seconds, careful not to burn it!
- Add in the rest of the butter, chicken stock, heavy cream, mascarpone cheese, salt and pepper and stir until melted. Add in the parmesan cheese and parsley, continue stirring until everything has melted. In a large mixing bowl, add in the chicken, mushrooms and spinach.
- Stir in the 1 cup of the shredded mozzarella cheese. Pour the sauce over the top and mix to combine. Pour the mixture into a 9" X 9" casserole or glass baking dish that has been sprayed with nonstick spray.
- Spread the mixture evenly and top with the remaining mozzarella cheese and bake for 15 minutes. Increase the temperature to 425F and bake for another 10 minutes or until the cheese is golden.
- Allow to cool slightly before serving. Due to the amount of healthy fats in this casserole, I recommend having small portions with a side salad to lighten things up a little. Store leftovers in the fridge for a few days or freeze.
*Make sure to scroll up and read the post for substitutions, additions and helpful tips for making this recipe.
*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, Monk Fruit or Allulose.
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Kim Shelman
Everything about this recipe is freakin' amazing!! I made it with the directions and my husband neary peed himself. This is definitely going into the rotation. Thanks so much!
Keto Cooking Christian
You are so welcome! I am thrilled you guys loved it so much!
Mitzi
what can I do to make this low fat ?
Keto Cooking Christian
I have not tried a low fat version so I am not sure how to make that type of adjustment.
Jennifer Matthews
Suggestion on how to reheat after freezing?
Keto Cooking Christian
You'll just let it thaw in the fridge overnight and reheat in the microwave until warm.
Star
This was an easy and very tasty keto meal that will definitely find a spot in the recurring menu plan. Healthy too with lots of vegetables and even a fungi!
Keto Cooking Christian
That's awesome to hear. It's one of my go-to recipes for when I have company over for dinner. It's always a huge hit.
Jennifer
Absolutely love this recipe!
Keto Cooking Christian
Fantastic, thank you!
Dawn
What can you use instead or marscapone cheese?
Keto Cooking Christian
Cream cheese will work just as well.
Barbara Kiser
Curious as to know how I could incorporate zucchini noodles into this wonderful dish?
Keto Cooking Christian
I suppose you could just serve the casserole over a bed of zoodles. I am not sure I would add them into the casserole though.
JLaffey
Oh my goodness! There are 5 picky eaters in the house and everyone loved it!
Keto Cooking Christian
Fantastic, that's so nice to hear that your picky eaters loved it!
Sherry Gilbert-Roumph
So good!!
Keto Cooking Christian
Thanks so much!
Lisa
That looks delicious! Always appreciate your verses.❤️
Keto Cooking Christian
Thanks so much!
Angeline
Great recipe! I’ve made this a few times and I love it!
Thank You!
Keto Cooking Christian
Awesome!
Dawn
This was so good. I don't like mushrooms so I added broccoli for added veggies. I also topped it with a "breadcrumb" topping. I had a failed Keto Naan Bread that I crumbled and used 2 cups with 4 T of melted butter. It reminded me of a Ritz cracker topping. So good.
Keto Cooking Christian
Sounds great, glad you enjoyed it!
Bettina Wilson
My family loved this. Can this be freezed?
Keto Cooking Christian
Yes, it absolutely can! Glad your family loved it 🙂
Sue Roberds
This is a delicious recipe, but mine turned out very runny. Any suggestions?
Keto Cooking Christian
Sorry to hear that, not sure why that might happen honestly.
Sharla Clark
What did you use for the chicken breast? Canned chicken? Rotisserie? Cook/boil your own??
Keto Cooking Christian
I used rotisserie, but you can use bake or poach your own if you'd like.
Darcie F
Alfredo sauce is to die for! Such wonderful flavor and heats up beautifully
Keto Cooking Christian
Aww, thanks so much! I'm glad you enjoyed it 🙂