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    Home / Recipes / Dinner / Keto Chicken Alfredo Casserole

    Keto Chicken Alfredo Casserole

    April 25, 2025 by Keto Cooking Christian 34 Comments

    This post may contain affiliate links. As an Amazon Associate I earn from qualifying purchases, see Disclosure.
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    This Chicken Alfredo Casserole is packed with tender, juicy chicken, a rich, velvety Alfredo sauce, and plenty of cheesy goodness. Creamy, comforting, and crazy delicious, this is the low-carb dinner the whole family will love.

    Chicken Alfredo Casserole being scooped out of casserole dish
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    Jump to:
    • ❤️ Why You'll Love This Keto Chicken Casserole
    • 🛒 Ingredients for Chicken Alfredo Casserole
    • 🔪 How to Make Keto Chicken Alfredo Casserole
    • ☑️ Storage Instructions
    • 🍴 What to Serve with This Creamy Casserole
    • 💡 Tips
    • 🔄 Substitutions and Additions
    • Is Alfredo Keto?
    • Can I Freeze Chicken Alfredo Casserole?
    • What Are Some Other Ways to Serve Keto Alfredo Sauce?
    • My Casserole Came Out Watery! What Went Wrong?
    • 🍽️ More Keto Casseroles

    ❤️ Why You'll Love This Keto Chicken Casserole

    • Tender, juicy chicken, savory mushrooms and spinach
    • Classic, velvety smooth Alfredo sauce
    • Great for meal prep and make-ahead meals
    • Easy to make, hearty and filling
    • Low carb and gluten-free
    closeup of serving of Chicken Alfredo Casserole on white square plate with parsley garnish

    If there’s one thing kids and adults alike can’t resist, it’s a cheesy, creamy, baked casserole that makes the whole kitchen smell amazing. This chicken alfredo bake has everything you love. Juicy chicken, an easy homemade Alfredo sauce, and plenty of mozzarella cheese to make every bite rich and gooey. Plus, it's Keto-friendly, which means you can enjoy all that cheesy goodness without worrying about extra carbs.

    This dish is the ultimate comfort food, but it’s also great for meal prep. Make it ahead of time, pop it in the oven when you’re ready, and dinner is served. Whether you’re feeding the family or just need an easy dinner for guests, this alfredo chicken casserole checks all the boxes.

    closeup of Chicken Alfredo Casserole with piece missing

    If you love this recipe, you should also try my quick and easy Creamy Shrimp Alfredo recipe.

    🛒 Ingredients for Chicken Alfredo Casserole

    • Chicken
    • Keto Alfredo Sauce
    • Mushrooms
    • Spinach
    • Mozzarella cheese
    • Chicken broth
    • Olive oil

    *Exact measurements are listed in the recipe card below.

    🥣 Recommended Tools

    • Skillet
    • Mixing bowl
    • Casserole baking dish

    🔪 How to Make Keto Chicken Alfredo Casserole

    Preheat oven to 400°F.

    Prepare the Keto Alfredo Sauce according to the directions, then set it aside to cool slightly while you prepare the other casserole ingredients.

    Keto Alfredo Sauce in saucepan with wooden spoon

    Add the olive oil and mushrooms to a large skillet.

    raw mushrooms in skillet

    Sauté until they have some good color, then set them aside to cool slightly.

    sautéed sliced mushrooms in skillet

    In a large mixing bowl, add in the mushrooms, chopped chicken, drained spinach and 1 cup of the shredded mozzarella cheese.

    cooked mushrooms, chopped chicken, spinach and mozzarella cheese in glass bowl in groups unmixed

    Pour in the slightly cooled Alfredo sauce and chicken broth.

    cooked mushrooms, chopped chicken, alfredo sauce, spinach and mozzarella cheese in glass bowl in groups unmixed

    Stir until well combined, then pour into a 9 x 9 casserole baking dish that's been sprayed with olive oil.

    Chicken Alfredo Casserole in baking dish unbaked

    Add the remaining shredded mozzarella cheese over the top.

    Chicken Alfredo Casserole in casserole baking dish unbaked with shredded mozzarella cheese on top

    Bake 25 minutes or until the cheese is golden and bubbly.

    Chicken Alfredo Casserole with piece missing

    Allow to cool slightly before serving.  

    ☑️ Storage Instructions

    Fridge: Store in an airtight container for up to 3-4 days.

    Freezer: Wrap tightly and freeze for up to 2 months. Thaw overnight in the fridge before reheating.

    🍴 What to Serve with This Creamy Casserole

    This is a complete meal in one, but you can serve it with some tasty Italian Breadsticks or a fresh, crisp green Caesar salad with homemade Caesar Dressing.

    Chicken Alfredo Casserole being scooped of of casserole dish

    💡 Tips

    • Drain the spinach well. Squeeze out as much liquid as possible to avoid a watery casserole.
    • Don’t skip the mascarpone in the sauce. It makes it extra creamy and balances the sharpness of the parmesan.
    • Bake uncovered. This helps the top layer of mozzarella cheese get that golden, bubbly finish.
    • Let it rest before serving. The casserole will thicken up slightly as it cools, making it easier to scoop.
    closeup of serving of Chicken Alfredo Casserole on white square plate with parsley garnish

    🔄 Substitutions and Additions

    • Add cauliflower: Chopped cauliflower makes a great filler if you want more veggies.
    • Swap spinach for broccoli: Broccoli adds a classic twist that works beautifully.
    • Use rotisserie chicken: A huge time-saver and just as tasty.
    • Try different cheeses: A little gouda or provolone adds an interesting depth of flavor.
    • Extra garlicky: Roast a few cloves and mash them into the sauce.
    • Crispy bacon: Top it with crispy bacon...because everything is better with bacon.
    • Crunchy topping. Crushed pork rinds can mimic breadcrumbs for a crispy top layer.
    Chicken Alfredo Casserole being scooped out of casserole dish

    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 be 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.

    What Are Some 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.

    My Casserole Came Out Watery! What Went Wrong?

    Make sure to drain the spinach well and avoid adding extra liquid beyond what the recipe calls for.

    Chicken Alfredo Casserole serving on white square dish with casserole dish in background

    🍽️ More Keto 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
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    Chicken Alfredo Casserole being scooped out of casserole dish

    Keto Chicken Alfredo Casserole

    This Chicken Alfredo Casserole is packed with tender, juicy chicken, a rich, velvety Alfredo sauce, and plenty of cheesy goodness.
    5 from 12 votes
    Author: Julianne
    Servings 8
    Print Pin
    Save RecipeSaved!
    PREP 10 minutes mins
    COOK 25 minutes mins
    TOTAL 35 minutes mins

    Ingredients
     

    • 16 ounces cooked chicken, chopped
    • 1 batch Keto Alfredo Sauce
    • 2 cups shredded mozzarella cheese
    • 9 ounces frozen spinach, thawed and well drained
    • 8 ounces baby bella mushrooms, sliced
    • ¼ cup chicken broth
    • 1 tablespoon olive oil

    Instructions
     

    • Preheat oven to 400°F.
      Prepare the Keto Alfredo Sauce according to the directions, then set it aside to cool slightly while you prepare the other casserole ingredients.
    • Add the olive oil and mushrooms to a large skillet. Sauté until they have some good color, then set them aside to cool slightly.
    • In a large mixing bowl, add in the mushrooms, chopped chicken, chicken broth, drained spinach, Alfredo sauce and 1 cup of the shredded mozzarella cheese.
    • Stir until well combined, then pour into a 9 x 9 casserole baking dish that's been sprayed with olive oil.
    • Add the remaining shredded mozzarella cheese over the top. Bake 25 minutes or until the cheese is golden and bubbly. Allow to cool slightly before serving.

    *Make sure to scroll up and read the post for substitutions, additions and helpful tips for making this recipe.

    Course Main Course
    Cuisine Italian
    Calories 603kcal
    Nutrition Facts
    Keto Chicken Alfredo Casserole
    Amount per Serving
    Calories
    603
    % Daily Value*
    Fat
     
    57
    g
    88
    %
    Saturated Fat
     
    32
    g
    200
    %
    Carbohydrates
     
    4
    g
    1
    %
    Fiber
     
    1
    g
    4
    %
    Sugar
     
    1
    g
    1
    %
    Protein
     
    29
    g
    58
    %
    * 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, Monk Fruit or Allulose.

    © Copyright for Keto Cooking Christian LLC. Please use the share buttons to share on social media, but please do not copy/paste the recipe.

    Rate this Recipe

    *Originally published on December 29, 2018, updated on April 25, 2025 with improvements to the recipe, new photos, new recipe information and helpful tips.

    17963 shares
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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

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    Reader Interactions

    Comments

      5 from 12 votes (2 ratings without comment)

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      Recipe Rating




    1. Carri

      March 12, 2024 at 5:29 am

      5 stars
      I made this tonight. Excellent! I will repeat!

      Reply
      • Keto Cooking Christian

        March 15, 2024 at 4:51 pm

        Thank you so much!

        Reply
    2. Kim Shelman

      September 24, 2023 at 8:44 pm

      5 stars
      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!

      Reply
      • Keto Cooking Christian

        September 26, 2023 at 8:47 am

        You are so welcome! I am thrilled you guys loved it so much!

        Reply
    3. Mitzi

      September 15, 2023 at 11:47 am

      what can I do to make this low fat ?

      Reply
      • Keto Cooking Christian

        September 18, 2023 at 10:42 am

        I have not tried a low fat version so I am not sure how to make that type of adjustment.

        Reply
    4. Jennifer Matthews

      July 04, 2023 at 2:25 pm

      Suggestion on how to reheat after freezing?

      Reply
      • Keto Cooking Christian

        July 05, 2023 at 12:41 pm

        You'll just let it thaw in the fridge overnight and reheat in the microwave until warm.

        Reply
    5. Star

      May 13, 2023 at 7:53 pm

      5 stars
      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!

      Reply
      • Keto Cooking Christian

        May 15, 2023 at 11:57 am

        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.

        Reply
    6. 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
    7. 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
    8. 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
    9. 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
    10. 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
    11. 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
    12. 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
    13. 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
    14. 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
    15. 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
    16. 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
    17. 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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