Keto Alfredo Sauce

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This Keto Alfredo Sauce is made with butter, cream, and Parmesan cheese, which come together to make the creamiest, richest sauce you can imagine to put on keto noodles or to pour over your favorite vegetables.

>> You might also like this Low Carb Cajun Chicken “Pasta” made with low carb noodle alternative.

A bowl of pasta alfredo

This is one of my favorite sauces to make, because it can be used in so many different ways. I love to pour it over steamed cauliflower or broccoli. And it’s great as a pasta sauce for low-carb noodles or a pasta substitute.

In Italy, Alfredo sauce is not made with cream. It’s just a simple butter and Parmesan topping for pasta. Not surprisingly, Americans added cream to the sauce and sort of commandeered it for our own. I’m not mad about it, but you definitely won’t find this type of creamy sauce on an authentic Italian meal. Regardless, it’s delicious!

Keto alfredo sauce

Ingredients You’ll Need

One of the reasons I love this sauce so much is because there are very few ingredients. This way, the ingredients speak for themselves and the flavors shine. However, this means you need to use high-quality ingredients.

  • Butter – You can use salted or unsalted butter. I typically use salted, and then don’t have to add much additional salt to taste at the end. If you use unsalted, you’ll likely have to add a bit of salt to the sauce at the end.
  • Heavy cream – A heavy whipping cream or double cream works well. Single cream or half-and-half has less fat content and will be more difficult to reduce into a luscious creamy sauce.
  • Parmesan cheese – I always shred my own Parmesan cheese from the block. It’s so much better, fresher, and tastier. I highly recommend doing that. If you really don’t want to, buy freshly shredded cheese, not the shelf-stable pulverized kind.
  • Garlic – You can add more garlic if you like it. I like to add it sparingly or add it in a chunk that can be removed, like they do in Italy.
  • Salt and pepper – Add at the end just to flavor if necessary. With the cheese and the butter, it’s often not necessary to use more salt.
Ingredients for alfredo sauce

How to Make Keto Alfredo Sauce

In a pan over medium heat, melt the butter. Then add the cream and whisk it together. Add the garlic. Cook for about 5 minutes over medium heat, allowing it to lightly bubble, but not boil, until the cream is slightly thickened. You don’t want it to get too thick or it won’t be a smooth sauce. It will become thick and clumpy.

Remove it from the heat. This makes it a perfect temperature to add the Parmesan without it becoming too hot and clumpy.

Add the Parmesan cheese a little at a time, whisking in between, until fully incorporated. It will completely mix into the cream, so it’s just a nice velvety sauce.

Cooking keto alfredo sauce in a pan

What to Use Keto Alfredo Sauce For?

It’s seriously good poured over the top of vegetables. If you’re looking for a way to elevate taste on your veggies, this is it! It goes well with cauliflower and broccoli or brussels sprouts.

If you don’t mind miracle noodles or keto-friendly pasta alternatives, you can use this Alfredo sauce as you would with regular pasta. I know a lot of people don’t like the texture of shirataki or konjac pasta, like Miracle Noodles or Wonder Noodles, but it really doesn’t bother me. It’s nice to have a pasta alternative once in a while.

If you don’t like shirataki noodles, you can use spiralized zucchini noodles or Palmini noodles.

A bowl of pasta alfredo

How Long Does It Keep?

It’s always best to use this creamy sauce right away. That’s when it will be at its best and most creamiest. However, you can store it in a container in the refrigerator for a few days and reheat it slowly on the stovetop when you’re ready to use it again.

A bowl of pasta alfredo

Can I Freeze Alfredo Sauce?

You technically can freeze it and reheat it without it breaking and turning into glop, but I really don’t recommend it. Since this sauce is incredibly easy and quick to make, I always suggest making it fresh when you need it. It’ll take just as much time to reheat frozen as it will to make it fresh.

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A bowl of keto pasta alfredo

Keto Alfredo Sauce

This Keto Alfredo Sauce is made with butter, cream, and Parmesan cheese, which come together to make the creamiest, richest sauce you can imagine to put on keto noodles or to pour over your favorite vegetables.
5 from 6 votes
Print Rate
Course: Sauce
Cuisine: American
Keyword: Butter, Parmesan Cheese
Prep Time: 5 mins
Cook Time: 5 mins
Total Time: 10 mins
Servings: 6 Servings
Calories: 187kcal
Author: Laura

Ingredients

  • 1 tablespoon butter
  • 1 cup heavy cream
  • 1/2 cup freshly shredded Parmesan cheese
  • 1 clove garlic minced
  • Salt and pepper to taste

Instructions

  • In a pan over medium heat, melt the butter. Then add the cream and whisk together. Add the garlic. Cook for about 5 minutes over medium heat, lightly bubbling, until the cream is slightly thickened. Remove from heat.
  • Add the Parmesan cheese a little at a time, whisking in between, until fully incorporated.
  • Use as desired.

Nutrition

Calories: 187kcal | Carbohydrates: 2g | Protein: 4g | Fat: 19g | Saturated Fat: 12g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 5g | Trans Fat: 1g | Cholesterol: 65mg | Sodium: 165mg | Potassium: 40mg | Fiber: 1g | Sugar: 1g | Vitamin A: 707IU | Vitamin C: 1mg | Calcium: 126mg | Iron: 1mg

The information shown is an estimate provided by an online nutrition calculator. It should not be considered a substitute for a professional nutritionist’s advice.

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Keto Alfredo Sauce
Keto Alfredo Sauce

5 thoughts on “Keto Alfredo Sauce

  1. Gina says:

    5 stars
    A big YES to this recipe! I really enjoyed this when I made it. So easy to make and simply delicious!

  2. Sally Humeniuk says:

    5 stars
    This is so creamy and delicious! I’m making it tonight and adding mushrooms and broccoli. Just right, thank you!

  3. Andrea says:

    5 stars
    I really like the idea of putting this fantastic alfredo sauce on veggies. Definitely going to try that.

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