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    Home / Recipes / Dinner / Keto Chicken Alfredo Casserole

    Keto Chicken Alfredo Casserole

    December 29, 2018 by Keto Cooking Christian 24 Comments

    This post may contain affiliate links. As an Amazon Associate I earn from qualifying purchases, see Disclosure.
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    A casserole of chicken, mushrooms and spinach swimming in creamy Alfredo sauce and baked with gooey cheese on top!

    closeup of Chicken Alfredo Casserole with spoonful

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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!

    Chicken Alfredo Casserole - Keto and Low Carb

    It's loaded with yummy creaminess from the heavy cream, grass-fed butter, mascarpone cheese and fresh grated parmesan.

    Chicken Alfredo Casserole - Keto and Low Carb

    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.

    Chicken Alfredo Casserole - Keto and Low Carb

    Remove and add a little more butter to the pan, then sauté the garlic for about 20 seconds, careful not to burn it!

    Chicken Alfredo Casserole - Keto and Low Carb

    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.

    Chicken Alfredo Casserole - Keto and Low Carb

    In a large mixing bowl, add in the chicken, mushrooms and spinach.

    Chicken Alfredo Casserole - Keto and Low Carb

    Stir in the 1 cup of the shredded mozzarella cheese.

    Chicken Alfredo Casserole - Keto and Low Carb

    Pour the sauce over the top and mix to combine.

    Chicken Alfredo Casserole - Keto and Low Carb

    Pour the mixture into a 9" X 9" casserole or glass baking dish that has been sprayed with nonstick spray.

    Chicken Alfredo Casserole - Keto and Low Carb

    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.

    Chicken Alfredo Casserole - Keto and Low Carb

    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.

    Chicken Alfredo Casserole - Keto and Low Carb

    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
    PIN Chicken Alfredo Casserole
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    Keto Chicken Alfredo Casserole being spooned out of the dish

    Keto Chicken Alfredo Casserole

    A casserole of chicken, mushrooms and spinach swimming in creamy Alfredo sauce and baked with gooey cheese on top!
    5 from 7 votes
    Print Pin SaveSaved! Rate
    Prep Time 10 mins
    Cook Time 25 mins
    Total Time 35 mins
    Author: Julianne
    Course: Main Course
    Calories: 603
    Servings: 8

    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.
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    Nutrition Facts
    Keto Chicken Alfredo Casserole
    Amount Per Serving
    Calories 603 Calories from Fat 513
    % Daily Value*
    Fat 57g88%
    Saturated Fat 32g200%
    Carbohydrates 4g1%
    Fiber 1g4%
    Sugar 1g1%
    Protein 29g58%
    * Percent Daily Values are based on a 2000 calorie diet.

    *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, Dinner, Italian, Popular, Posts, Recipes Tagged With: best keto recipes, best low carb recipes, chicken alfredo casserole, 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

    Bible verse of the day

    But be ye doers of the word, and not hearers only, deceiving your own selves.
    James 1:22

    Reader Interactions

    Comments

    1. Jennifer

      August 13, 2022 at 12:13 pm

      5 stars
      Absolutely love this recipe!

      Reply
      • Keto Cooking Christian

        October 06, 2022 at 9:22 am

        Fantastic, thank you!

        Reply
    2. Dawn

      July 14, 2022 at 6:41 pm

      What can you use instead or marscapone cheese?

      Reply
      • Keto Cooking Christian

        July 14, 2022 at 6:42 pm

        Cream cheese will work just as well.

        Reply
    3. Barbara Kiser

      May 24, 2022 at 7:49 am

      Curious as to know how I could incorporate zucchini noodles into this wonderful dish?

      Reply
      • Keto Cooking Christian

        May 29, 2022 at 1:31 pm

        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.

        Reply
    4. JLaffey

      May 18, 2022 at 6:27 pm

      Oh my goodness! There are 5 picky eaters in the house and everyone loved it!

      Reply
      • Keto Cooking Christian

        October 06, 2022 at 9:26 am

        Fantastic, that's so nice to hear that your picky eaters loved it!

        Reply
    5. Sherry Gilbert-Roumph

      October 18, 2021 at 3:45 pm

      5 stars
      So good!!

      Reply
      • Keto Cooking Christian

        October 19, 2021 at 7:48 am

        Thanks so much!

        Reply
    6. Lisa

      November 27, 2020 at 3:57 pm

      That looks delicious! Always appreciate your verses.❤️

      Reply
      • Keto Cooking Christian

        December 08, 2020 at 12:47 pm

        Thanks so much!

        Reply
    7. Angeline

      July 29, 2020 at 8:16 pm

      5 stars
      Great recipe! I’ve made this a few times and I love it!
      Thank You!

      Reply
      • Keto Cooking Christian

        August 05, 2020 at 11:49 am

        Awesome!

        Reply
    8. Dawn

      May 01, 2020 at 7:30 pm

      5 stars
      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.

      Reply
      • Keto Cooking Christian

        May 02, 2020 at 4:12 pm

        Sounds great, glad you enjoyed it!

        Reply
    9. Bettina Wilson

      November 29, 2019 at 2:06 pm

      5 stars
      My family loved this. Can this be freezed?

      Reply
      • Keto Cooking Christian

        November 29, 2019 at 4:28 pm

        Yes, it absolutely can! Glad your family loved it 🙂

        Reply
    10. Sue Roberds

      November 03, 2019 at 8:57 pm

      5 stars
      This is a delicious recipe, but mine turned out very runny. Any suggestions?

      Reply
      • Keto Cooking Christian

        November 05, 2019 at 5:55 pm

        Sorry to hear that, not sure why that might happen honestly.

        Reply
    11. Sharla Clark

      July 13, 2019 at 12:41 pm

      What did you use for the chicken breast? Canned chicken? Rotisserie? Cook/boil your own??

      Reply
      • Keto Cooking Christian

        July 13, 2019 at 12:47 pm

        I used rotisserie, but you can use bake or poach your own if you'd like.

        Reply
    12. Darcie F

      January 10, 2019 at 4:59 pm

      5 stars
      Alfredo sauce is to die for! Such wonderful flavor and heats up beautifully

      Reply
      • Keto Cooking Christian

        January 10, 2019 at 5:34 pm

        Aww, thanks so much! I'm glad you enjoyed it 🙂

        Reply

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    Julianne Walser KCC

    I'm Julianne, welcome! I offer tasty and indulgent Keto and Low Carb recipes that will never leave you feeling deprived!

    More about me →

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