KetoDiet App is free to download, try it now!

Low-Carb Alfredo Sauce

4.4 stars, average of 13 ratings

Low-Carb Alfredo SaucePin itFollow us 134.8k

Growing up in an Italian family, pasta has always been my ultimate comfort food. For the ultimate indulgence, it was Alfredo pasta, topped off with a rich, creamy sauce.

But instead of regular pasta, you can serve this creamy low-carb cheese sauce with keto-friendly options such as shirataki noodles or zucchini noodles!

This recipe below is for a basic gluten-free Alfredo sauce, but I’m also giving you some tips on how best to serve it, along with some flavour variations to mix things up a bit.

  • In terms of cooking the sauce, it’s really simple and comes together in minutes. The cheese added in at the end not only adds flavour but also will help thicken up the sauce. Make sure you don’t scrimp here, and use the best quality Parmesan you can find/afford, and grate it fresh before adding.
  • The sauce will thicken further if you leave it a few minutes before serving. Note however that this sauce does not have any thickeners, and therefore it is on the runnier side. To thicken further, add more parmesan, and/or cream cheese (see notes below).
  • If not serving straight away, store the sauce separately from the pasta/zoodles (or however you wish to serve it), and then when reheating do so over a low heat, whisking to combine and avoid separation. Alternatively, give the sauce a quick blitz using a hand blender.
  • Alfredo sauce can be frozen, but it may separate when reheating. This can affect the flavour and texture, so I would always recommend to make it fresh and in smaller quantities rather than freezing.

Alfredo Sauce Variations

  • Herbed — add in a tsp of dried Italian herbs at step 2, or stir through 2 tablespoons of pesto at the end.
  • Smokey — add 1/2 tsp smoked paprika at step 2. Serve on shirataki noodles topped with sliced fried chorizo for a smoky sausage pasta.
  • Thick & creamy — add 40 g/ 1.4 oz cream cheese at step 1 — this will thicken the sauce further and create a creamier texture.
  • Browned butter — In step 1, add the butter first, and cook over medium heat, swirling in the pan, until starting to turn an amber colour. Reduce to low heat, whisk in the cream, and then continue with the rest of the recipe.
  • Also make sure to try our Keto Cheese Sauce which is made with cheddar instead of Parmesan, and additionally includes cream cheese!
The #1 Keto Diet App
Low-Carb Alfredo Sauce
Free Download
1,500+ delicious keto recipes
Trialed & tested for best results
Optimized for nutrition
Never feel hungry
Planner & tracker
Track all macros including net carbs
Scan products
Create your own meals
Advanced tracking
Track ketones, blood glucose & lipids
Stay hydrated with water tracking
Track your mood & energy levels
Macro calculator
Calculate your ideal fat, protein & carb intake
Set any goal: weight loss, maintenance or weight gain
Your macros update based on your progress
Monitor your macros, water intake, mood & energy
Body weight, body fat and body measurements
Ketones, blood glucose & lipids
Evidence-based content
Expert articles to help you make informed choices
Guides & free diet plans
New daily content
And so much more...!
Complete Keto Diet guide
Integrated shopping basket
Restaurants & guide to eating out
Free Download

Hands-on Overall

Serving size about 1/4 cup/ 60 ml

Allergy information for Low-Carb Alfredo Sauce

✔  Gluten free
✔  Egg free
✔  Nut free
✔  Nightshade free
✔  Pork free
✔  Avocado free
✔  Coconut free
✔  Fish free
✔  Shellfish free
✔  Beef free
Download Recipe

Nutritional values (per serving, about 1/4 cup/ 60 ml)

Net carbs1.7 grams
Protein5.7 grams
Fat28.9 grams
Calories290 kcal

Calories from carbs 2%, protein 8%, fat 90%

Total carbs1.7 gramsFiber0 gramsSugars1.2 gramsSaturated fat18.2 gramsSodium424 mg(18% RDA)Magnesium9 mg(2% RDA)Potassium50 mg(2% EMR)

Ingredients (makes 6 servings)

  • 1/3 cup butter (75 g/ 2.7 oz)
  • 1 cup heavy cream (240 ml/ 8 fl oz)
  • 1/2 tsp garlic powder
  • 1/2 tsp sea salt
  • 1/4 tsp freshly ground pepper
  • 3/4 cup + 2 tbsp grated Parmesan cheese (80 g/ 2.8 oz)


  1. Finely grate the Parmesan cheese.
    Low-Carb Alfredo Sauce
  2. Add the butter and cream to a large saucepan over low heat. Simmer, stirring, for 3 minutes.
    Low-Carb Alfredo Sauce
  3. Whisk in the garlic, salt, and pepper, and then the grated Parmesan cheese. Low-Carb Alfredo Sauce
  4. Cook until melted and the sauce has thickened slightly.
    Low-Carb Alfredo Sauce
  5. Allow to sit 2-3 minutes before serving to allow sauce to thicken further.
    Low-Carb Alfredo Sauce
  6. Enjoy over zoodles, grilled meat, fish and cooked vegetables.
    Low-Carb Alfredo Sauce
  7. The sauce is best enjoyed fresh but can be stored in the fridge for up to 5 days. To serve, reheat over a low heat, whisking to combine and avoid separation. Low-Carb Alfredo Sauce

Ingredient nutritional breakdown (per serving, about 1/4 cup/ 60 ml)

Net carbsProteinFatCalories
Butter, unsalted, grass-fed
0 g0.1 g10.2 g90 kcal
Cream, heavy whipping, pouring, full-fat (30-40% fat)
1 g0.8 g15.2 g146 kcal
Garlic powder, spices
0.2 g0 g0 g1 kcal
Salt, sea salt
0 g0 g0 g0 kcal
Pepper, black, spices
0 g0 g0 g0 kcal
Parmesan cheese
0.4 g4.8 g3.4 g52 kcal
Total per serving, about 1/4 cup/ 60 ml
1.7 g5.7 g28.9 g290 kcal

Low-Carb Alfredo SaucePin itFollow us 134.8k

  1. Blog
  2. Recipes
  3. Basics
  4. Low-Carb Alfredo Sauce
  1. Blog
  2. Recipes
  3. Sides
  4. Low-Carb Alfredo Sauce
  1. Blog
  2. Recipes
  3. Vegetarian
  4. Low-Carb Alfredo Sauce
  1. Blog
  2. Recipes
  3. Low-Carb Alfredo Sauce
  1. Blog
  2. Dearna Bond
  3. Low-Carb Alfredo Sauce

Do you like this recipe? Share it with your friends! 

Dearna Bond
Creator of

Dearna Bond

Dearna is a passionate foodie and food photographer, and loves sharing her knowledge and enthusiasm for both via her food blog and online photography courses.

Let us know what you think, rate this recipe!

Leave a comment

Note: Any links to products or affiliate links will not be approved.
Please note that we do not offer personalised advice. For any diet related questions, please join our Facebook community.