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Home / Recipes / Keto Sauces

Homemade Keto Alfredo Sauce Recipe

By Lisa MarcAurele · Jul 8, 2020 · 34 Comments

7.1K shares
Jump to Recipe
keto alfredo sauce pinterest image
easy low carb keto alfredo sauce

Homemade keto Alfredo sauce is so easy to make! Simply cook all the ingredients together in a saucepan until smooth. Then serve this easy low carb cream cheese sauce over zoodles or keto friendly fettuccine.

serving alfredo with zoodles
Article Index
  • Ingredients used
  • How to thicken the sauce without flour
  • How to make Alfredo sauce keto
  • Carbs in the sauce
  • Tips for keeping the sauce creamy
  • Serving Suggestions
  • Storing leftovers in the refrigerator
  • Can you freeze Alfredo sauce?
  • Other homemade sauces
  • Alfredo sauce recipe
  • Recipe

My husband loves growing squash each year in the garden. And this year, we had a nice crop of zucchini. He also planted spaghetti squash so I had a nice supply of vegetable noodles.

I made a low carb chocolate cake and zucchini bread for a couple summer potlucks. But I also wanted to make an easy dish with zucchini and spaghetti squash that I could enjoy for lunch.

It only took a little homemade low carb Alfredo sauce to turn the veggies into a meal. And for something a little heartier, I added in some deli chicken and ham.

In the past, I’ve used this recipe to make a simple sauce while following an egg fast diet plan. However, I wanted to make a larger batch with heavy cream which is typically avoided while egg fasting.

keto alfredo sauce in small crock

Ingredients used

If you’ve never made your own white pasta sauce, you’ll be surprised how easy it is. You can make a simple cream sauce with butter, heavy cream, parmesan cheese, and cream cheese. Those are the four basic ingredients I use to make homemade keto Alfredo sauce.

I like to add a few more ingredients to mine to enhance the flavor. For me, garlic is one of the best seasonings ever so I add in a few freshly minced cloves. I also add in a few shakes of fresh ground black pepper.

There's very little preparation needed to make homemade sauce. And, it’s much better to make it yourself because commercially prepared ones always contain unnecessary ingredients that up the carbs.

Note: You’ll find the full list of ingredients to make this low-carb dish with amounts used in the recipe card at the bottom.

How to thicken the sauce without flour

To keep the sauce low carb it needs to be made without flour. Traditional sauces use a mixture of flour and fat known as a roux. However, cream cheese can be used instead to make the sauce thicker and creamier.

How to make Alfredo sauce keto

I love this recipe because it’s quick and easy to make. Once the butter is melted in a medium saucepan over low heat, stir in some minced garlic until fragrant. I add in two cloves, but more or less can be added to taste. Garlic powder can also be added if you don’t have fresh.

melted butter for sauce

I like to add a few more ingredients to mine to enhance the flavor. For me, garlic is one of the best seasonings ever so I add in a few freshly minced cloves. I also add in a few shakes of fresh ground black pepper.

adding cream and cheese

Stir in cream cheese, heavy cream, and parmesan cheese after the garlic is fragrant. Then allow the sauce to simmer for about ten minutes or until it thickened. Sprinkle in salt and pepper to taste before serving.

sauce in pot

Carbs in the sauce

This keto friendly alfredo sauce recipe makes about four cups of sauce. It’s plenty to serve sixteen people if you use about ¼ cup per serving. It’s a very filling sauce with about 28 grams of fat and only 2 grams of net carbs per serving.

Tips for keeping the sauce creamy

A common problem with homemade Alfredo sauce is that it can separate. The reason this happens is usually because the temperature was too high. When preparing the sauce, keep the liquid below a simmer and do not allow it to boil.

Serving Suggestions

The best way to serve this creamy sauce is over low carb noodles like:

  • Homemade keto noodles are perfect for fettuccine alfredo!
  • Spiralized zucchini is easy to prepare at home or purchase fresh or frozen in most markets.
  • Crockpot spaghetti squash or Instant Pot spaghetti squash are two ways to prepare easy vegetable noodles
  • Shiratake pasta is another great option that has close to zero net carbs.

You can even add in some meat like cooked chicken breast or ham cut up into bite-sized cubes. A couple family favorite dishes with low carb Alfredo sauce are spaghetti squash shrimp Alfredo and a chicken alfredo casserole.

low carb alfredo sauce over zoodles

Storing leftovers in the refrigerator

Serve this cream sauce immediately for best results. But since this recipe makes over a dozen servings, you might want need to stash some away for later.

If you’ll be using it up within a week, you can go ahead and store it in an airtight container in the refrigerator. 

Reheating is easy. Just reheat it on the stove on low to medium heat. Or, you can warm it up in the microwave. Just be sure to use a low power so the sauce does get too hot and separate.

The sauce tends to thicken more after being chilled. If you need to thin out the sauce, add in a little more cream and or water as needed.

Can you freeze Alfredo sauce?

For longer storage, store the sauce in the freezer for up to 3 months. Just make sure you place it in an airtight container with as much air removed as possible.

I like to use reusable silicone zipper bags. They are much more economical and environmentally friendly than disposable plastic bags. But you can also use a freezer safe containers made of glass or plastic.

Other homemade sauces

Once you discover how easy it is to make your own keto sauces at home, you’ll be looking for more recipes to try. Here’s a few to get you started:

  • Keto cheese sauce
  • Creamy dill mustard sauce
  • Keto brown gravy
  • Keto cream sauce
  • Low carb barbecue sauce

Alfredo sauce recipe

If you've been searching for an easy homemade keto alfredo sauce, this one is sure to be a hit. It can be made in about 15 minutes to serve on zoodles or for adding as an ingredient into other recipes.

Follow us on FACEBOOK, PINTEREST, and INSTAGRAM for even more tasty keto-friendly recipes!

Recipe

keto alfredo sauce

Low Carb Alfredo Sauce

4.64 from 19 votes
It's so easy to make homemade Alfredo sauce! Simply cook all the ingredients in a saucepan then serve.
Prep Time:5 minutes mins
Cook Time:10 minutes mins
Total Time:15 minutes mins
Course: Side Dish
Cuisine: Italian
Print Pin Review Recipe Save Recipe View Collections
Servings: 16 people
Calories: 321

Video

Ingredients

  • ½ cup butter
  • 2 cloves garlic minced
  • 2 ounces cream cheese
  • 1 ½ cup parmesan cheese shredded
  • 2 cups heavy whipping cream
  • dash ground black pepper
US Customary - Metric

Instructions

  • Melt butter in medium saucepan over medium heat. Sauté garlic in hot butter until fragrant. 
  • Blend in remaining ingredients and simmer for about 10 minutes or until sauce has thickened.

Notes

Sauce will thicken as it cools and will become very thick if stored in the refrigerator. Simply heat the sauce up for it to be pourable.

Low Carb Sweeteners | Keto Sweetener Conversion Chart

Nutrition

Serving: 0.25cup | Calories: 321 | Carbohydrates: 2g | Protein: 15g | Fat: 28g | Saturated Fat: 18g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 7g | Cholesterol: 87mg | Sodium: 706mg | Potassium: 65mg | Sugar: 1g | Vitamin A: 950IU | Calcium: 490mg | Iron: 0.4mg

Additional Info

Net Carbs: 2 g | % Carbs: 2.5 % | % Protein: 18.8 % | % Fat: 78.8 % | SmartPoints: 13
Values
Array
(
    [serving_size] => 0.25
    [calories] => 321
    [carbohydrates] => 2
    [protein] => 15
    [fat] => 28
    [saturated_fat] => 18
    [polyunsaturated_fat] => 1
    [monounsaturated_fat] => 7
    [cholesterol] => 87
    [sodium] => 706
    [potassium] => 65
    [sugar] => 1
    [vitamin_a] => 950
    [calcium] => 490
    [iron] => 0.4
    [serving_unit] => cup
)

Notes on Nutritional Information

Nutritional information for the recipe is provided as a courtesy and is approximate only. We cannot guarantee the accuracy of the nutritional information given for any recipe on this site. Erythritol carbs are not included in carb counts as it has been shown not to impact blood sugar. Net carbs are the total carbs minus fiber.

Copyright

© LowCarbYum.com - Unauthorized use of this material without written permission is strictly prohibited unless for personal offline purposes. Single photos may be used, provided that full credit is given to LowCarbYum.com along with a link back to the original content.

Last Updated: 23 October 2019
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Reader Interactions

Comments

  1. Mary

    November 14, 2022 at 3:45 pm

    5 stars
    oh my gosh! I was feeling a little blue today and just wanted something decadent for lunch. I am a diabetic so I watch my carbs and sugar. This was so good with zoodles. I did what was suggested and just warmed them in the microwave. It was wonderful. It was a tad thin for me so, poor me, I had to add a little more parmesan. I always have the ingredients on hand. I have a little dinner party coming up and this along with baked chicken breast is now the menu. Thank you so much for the recipe.

    Reply
  2. Elaine Dale

    September 01, 2020 at 5:52 pm

    I have made this recipe many times and it is so simple and delicious!!
    Thank you!!!

    Reply
    • Nicole

      October 15, 2021 at 5:56 pm

      What are the measurements for the ingredients? HOw much of the cream, Cream cheese, Parmesano, Butter? How do I mke this?

      Reply
      • Lisa MarcAurele

        October 16, 2021 at 8:15 am

        Please scroll down or use the "Jump To Recipe" button at the top. There is a recipe card at near the bottom of the post with everything you need.

  3. Jazz

    November 03, 2019 at 3:33 pm

    5 stars
    Amazingly easy and super delicious! My partner said It was the best alfredo sauce he'd ever had. I did increase the amount of garlic quite a bit, because I am a garlic fiend. I also added a couple of shakes of nutmeg at the very end of cooking. This is definitely a KEEPER!!!

    Reply
  4. Lani

    November 05, 2018 at 12:36 am

    3 stars
    I followed this recipe as is. This was good as a base but lacked flavor. Next time I’ll add more seasoning

    Reply
  5. maron

    March 15, 2018 at 5:36 pm

    5 stars
    how long is it good for in the fridge? its amazing btw

    Reply
    • Lisa

      March 15, 2018 at 7:59 pm

      Mine has been fine for 5 to 7 days.

      Reply
      • Sawna

        January 17, 2022 at 6:58 pm

        Can this sauce be canned?

      • Lisa MarcAurele

        January 17, 2022 at 7:16 pm

        It should be okay, but I freeze mine as I'm not completely sure.

      • Goose

        July 19, 2022 at 6:09 pm

        Can I ask if you don't have fresh garlic, can you possibly use either garlic powder or mixed garlic? And if so, what would you recommend for measurements? I understand you didn't make it this way, but I'm in a pinch, and I know I have garlic powder (not garlic salt), and might possibly have a jar of minced garlic.
        Thank you

      • Lisa MarcAurele

        July 20, 2022 at 8:04 am

        One clove of garlic is equivalent to about 1/4 teaspoon powder. For minced garlic, I usually go with the conversion of 1 teaspoon minced for every clove. Hope that helps!

  6. Andrea

    February 20, 2018 at 4:39 pm

    Can I use something other than the heavy cream?

    Reply
    • Lisa

      February 20, 2018 at 6:49 pm

      You could use coconut cream or thicken up a low carb milk.

      Reply
  7. Arrietta

    January 30, 2018 at 6:48 pm

    Hey! How much is a single serving?

    Reply
    • Lisa

      January 31, 2018 at 7:49 am

      I blend it into my zoodles so it it works out to be only a tablespoon or two.

      Reply
    • Emily

      July 10, 2019 at 6:04 pm

      5 stars
      This is the best recipe ive ever tasted and it is extremely filling!

      Reply
  8. Miriam

    January 21, 2018 at 8:48 pm

    5 stars
    I'm so happy! I tried this recipe and it was EASY and delicious!!! I do not like to cook but realize it's the only way to eat low carb. I pinned and am going to spend the rest of the evening looking at your site.

    Thank you!!!!
    Miriam

    Reply
    • Lisa

      January 22, 2018 at 5:31 am

      Thanks for sharing Miriam! I hope you enjoy other recipe too.

      Reply
    • Goose

      July 19, 2022 at 6:12 pm

      Homemade Alfredo is one of my favorite things to make and it's really quite simple (when you have the ingredients). I'm going to try it tonight with either powdered garlic or hopefully just minced garlic in the jar (not sure if I have minced though). I don't use a ton of garlic because I tend to get really bad heartburn from it, but not usually when I make Alfredo.... thank goodness!

      Reply
  9. G.T.Void

    January 15, 2018 at 3:02 pm

    5 stars
    Delicious recipe but don't heed the advice about microwaving the veggies- NEVER microwave your food. Simply spiralize your zucchini and heat it in a skillet until starts to release water, then put it in a colander until ready to use.

    Reply
  10. Janie

    January 06, 2018 at 8:34 pm

    4 stars
    What a great low carb alfredo recipe. I'm really trying hard to lose the weight I've gained in the past year & 1/2. Trying to stick to KETO as strictly as I can---& this delicious sauce makes it an easier journey.

    Thank you!!

    JB

    Reply
    • Lisa

      January 07, 2018 at 11:55 am

      You're welcome. Wishing you much success on keto!

      Reply
  11. Nancy

    November 21, 2017 at 8:27 pm

    5 stars
    yummy!! thank you!

    Reply
    • Lisa

      November 22, 2017 at 2:54 pm

      You're welcome!

      Reply
  12. Robin

    September 28, 2017 at 2:35 am

    4 stars
    Hi, I have a serious problem! When I put your recipe into MyFitnessPal, it came back reading over 40 grams of Carbs!!! I ate it before I entered. I know that those ingredients don't add up to many carbs at all much less 40. Have you heard of this happening? I even went back to check the recipe, it was exactly the measurements and the serving sizes you suggest. This throws everything off for me. Do you know how I can fix it? The recipe turned out great though ? I used it over zoodles mixed with HEALTHY NOODLES which are 1 net carb/serving

    Reply
    • Lisa

      September 28, 2017 at 6:37 am

      You need to check the ingredients that were picked. A lot of those are WAY OFF in MFP. I entered the recipe and the macros for the parmesan cheese were wrong.

      Reply
  13. Jay

    September 25, 2017 at 12:22 am

    5 stars
    Great recipe! Made it tonight and it came out perfect. Served it over zucchini noodles and chicken thighs.

    Reply
    • Lisa

      September 25, 2017 at 6:20 am

      Thanks for letting us know how much you enjoyed it Jay!

      Reply
  14. Cindy Stephens

    August 11, 2017 at 7:48 am

    5 stars
    I've seen a few recipes from your page, they all sound delicious and nutritious. Just signed up for the newsletter, thank you for sharing your journey. I too have been dealing with the thyroid issues and wanting to be healthy and fit.

    Reply
    • Lisa

      August 11, 2017 at 1:17 pm

      Thanks for stopping in Cindy. Best to you on your journey!

      Reply
  15. Sonia Bent

    July 25, 2017 at 3:08 pm

    5 stars
    Brilliant blog Lisa thank you for valuable info. I have a question for you how come in some food items like almond flour and dedicated coconut the fibre content is a lot higher than the carbohydrate

    Reply
    • Lisa

      July 26, 2017 at 6:28 am

      Fiber should never be higher than carb unless it's a mistake.

      Reply
      • Shea

        February 12, 2018 at 12:06 pm

        5 stars
        It can be higher if the food is coming from Europe, as they deduct fiber from the total carb count and list it separately. So if it's a European label, the carbs list are net.

4.64 from 19 votes (5 ratings without comment)

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