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.
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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.
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.
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.
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.
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.
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:
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.
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📖 Recipe
Low Carb Alfredo Sauce
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
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
Low Carb Sweeteners | Keto Sweetener Conversion Chart
Nutrition
Additional Info
Note 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.
Unauthorized use of this material without written permission from Lisa MarcAurele 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.
Elaine Dale
I have made this recipe many times and it is so simple and delicious!!
Thank you!!!
Nicole
What are the measurements for the ingredients? HOw much of the cream, Cream cheese, Parmesano, Butter? How do I mke this?
Lisa MarcAurele
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.
Jazz
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!!!
Lani
I followed this recipe as is. This was good as a base but lacked flavor. Next time I’ll add more seasoning
maron
how long is it good for in the fridge? its amazing btw
Lisa
Mine has been fine for 5 to 7 days.
Sawna
Can this sauce be canned?
Lisa MarcAurele
It should be okay, but I freeze mine as I'm not completely sure.
Goose
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
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!
Andrea
Can I use something other than the heavy cream?
Lisa
You could use coconut cream or thicken up a low carb milk.
Arrietta
Hey! How much is a single serving?
Lisa
I blend it into my zoodles so it it works out to be only a tablespoon or two.
Emily
This is the best recipe ive ever tasted and it is extremely filling!
Miriam
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
Lisa
Thanks for sharing Miriam! I hope you enjoy other recipe too.
Goose
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!
G.T.Void
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.
Janie
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
Lisa
You're welcome. Wishing you much success on keto!
Nancy
yummy!! thank you!
Lisa
You're welcome!
Robin
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
Lisa
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.
Jay
Great recipe! Made it tonight and it came out perfect. Served it over zucchini noodles and chicken thighs.
Lisa
Thanks for letting us know how much you enjoyed it Jay!
Cindy Stephens
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.
Lisa
Thanks for stopping in Cindy. Best to you on your journey!
Sonia Bent
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
Lisa
Fiber should never be higher than carb unless it's a mistake.
Shea
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.