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My 4-ingredient keto Alfredo sauce is creamy, cheesy, and pure delicious. Make it in minutes and use it on everything! 1 gram of net carbs.
Need more keto sauce recipes? Try my keto cheese sauce, keto pizza sauce, and keto spaghetti sauce next.
I can go months without thinking about fettuccine Alfredo… but the second I go keto, that’s the first dish on my mind.
Luckily I’ve developed the perfect low carb Alfredo sauce that’s every bit as rich and creamy but with virtually zero carbs.
Table of Contents
Why I love this recipe
- Made with 4 ingredients. All you need is butter, cream, parmesan cheese, and garlic.
- Versatile. Don’t think you have to stick to keto noodles alone. I’ve served this sauce over veggies, protein, and even as a mac and cheese sauce, and it’s been a hit every time.
- Ready in minutes. Everything simmers in one skillet, so it’s ready to go before you know it.
- So darn creamy. Traditional Alfredo is close to being keto, just with one huge difference: flour and thickeners! Since flour doesn’t add flavor anyway, my low-carb Alfredo tastes like the real deal.
Ingredients needed
- Butter. I always recommend using unsalted butter since the salt in salted butter can vary. Use good-quality butter from a block, not a spread.
- Heavy cream. Also known as thickened cream or double cream. Avoid using reduced-fat or low-fat varieties, which will yield a watery sauce.
- Parmesan cheese. Freshly grated or refrigerated parmesan cheese. Avoid the shelf-stable stuff, as it won’t give the sauce the proper consistency.
- Garlic. I used freshly minced garlic.
How to make a keto alfredo sauce
I’ve included step-by-step photos below to make this recipe easy to follow at home. For the full printable recipe instructions and ingredient quantities, scroll to the recipe card at the bottom of this post.
Step 1- Simmer. Melt butter in a medium saucepan over medium heat. Add the minced garlic and cook for 1-2 minutes. Add the cream and bring to a simmer, stirring gently. Simmer for 5 minutes, then remove from the heat.
Step 2- Add parmesan. Stir in the parmesan and let sit for 5 minutes to melt. Whisk the mixture to remove clumps, then serve as desired.
Arman’s recipe tips
- Add nutmeg. Many Alfredo sauce recipes call for nutmeg, so give that a try!
- If you want to add pepper but don’t want to affect the color of the sauce, use white pepper instead.
- Make an even creamier sauce. If I’m using this over vegetables, I like it to have a thicker, creamier texture, so I’ll add a dollop of softened cream cheese.
- Garnish the sauce with fresh parsley for a pop of color.
What to serve with this recipe
While traditional pasta and noodles are out of the question, there are plenty of keto options that taste just as good, if not better.
- Low-carb pasta. Store-bought keto pasta, like penne or shirataki noodles. You can also try homemade kinds like my almond flour pasta, keto pasta, or keto gnocchi.
- Vegetable noodles. Zucchini noodles (AKA zoodles), butternut squash noodles, or even spaghetti squash.
- Steamed vegetables. Low-carb vegetables like broccoli, green beans, spinach, cauliflower, or asparagus.
- Meat. Simply cooked protein like air fryer steak, oven-baked pork chops, or cast iron chicken thighs.
- Seafood. Plain white fish like grouper, baked haddock, or sautéed shrimp.
Storage instructions
To store: Store leftover sauce in an airtight container in the refrigerator for up to three days.
To freeze: Let the sauce cool completely, then store in a freezer-friendly container and freeze for up to six months.
Reheating: Microwave the sauce for 30 seconds or reheat in a pan until warm.
Frequently asked questions
While it might seem like it is, traditional Alfredo sauce is usually not keto-friendly due to the high-carb fillers and thickeners it contains.
More keto condiments
4-Ingredient Keto Alfredo Sauce
Ingredients
- 2 tablespoon butter
- 3 cloves garlic minced
- 1 1/4 cups heavy cream
- 1/3 cup parmesan cheese finely grated
Instructions
- In a small saucepan, add the butter and place it over low heat. Once it has melted, add the minced garlic and cook for 1-2 minutes, until fragrant. Add the heavy cream and bring to a simmer, stirring gently. Once it begins to simmer, let it do so for 5 minutes, before removing from the heat.
- Fold through the parmesan cheese and let sit for 5 minutes, to melt into the sauce. Whisk gently to ensure there are no clumps and serve over pasta, chicken, fish, or vegetables.
I just started keto again and was looking for an alfredo sauce. I made this on a whim because I had all ingredients already in my house. This did not disappoint. It is so good. I wanted it a little bit thicker so I added a bit of cream cheese.
Just curious how much is 1 serving is? I thought I saw 1/4 of a cup, but that sounds like a lot.
It’s the best. It’s real pasta but there’s tons of fiber in it. It doesn’t raise my blood sugar either. The key to making it low sugar is not to eat too much on one sitting.
I always add a pinch of lemon zest. It adds a brightness to the sauce and brings out the flavors.
Love this recipe! We love to eat spicy so I added cajun seasoning and dried cilantro flakes. Delicious! We are eating low-carb so I paired it with shirataki noodles.
The pasta at carbzone.co.uk (carbzone.se for the Eurozone; other websites for other locations appear to be available) is the best-tasting, is prepared like normal pasta, and doesn’t raise my blood sugar any more than a regular low-carb meal does. Not for the gluten-free crowd though as part of the reason it perform so well is that the manufacturers add back the missing wheat gluten. Fortunately I, like most people, have no issues with gluten.
Fiber Gourmet makes excellent low carb pasta
This is banging!!
Do you want it a little thicker?
Add some more cheese!
I will be making this again!!
You can also make the Alfredo Sauce with Almond milk as well, substituting for the dairy cream. I can’t have dairy.
Awesome and easy
I really want to try the Alfredo recipe. But what kind of noodles can a diabetic eat?
Whichever diabetic friendly pasta you can have. I’m not a medical professional so I don’t feel comfortable suggesting any, even if they are low carb or keto.
Awesome