This Keto Alfredo Sauce is rich, creamy, and comes together in just minutes with simple ingredients. It’s perfect for tossing with zucchini noodles, pouring over grilled chicken, or using as a base for casseroles and keto comfort meals.
Traditional Alfredo uses flour to thicken, but this low-carb version relies on cream cheese and real shredded cheese for a naturally thick, velvety sauce — no flour, no cornstarch, and no weird ingredients.
Once you make this from scratch, you’ll never go back to the jarred stuff again.
Ingredients
- 1/4 cup butter
- 1 tablespoon garlic, minced
- 1 1/2 cups heavy cream
- 3 ounces cream cheese, cubed
- 1/2 cup Parmesan cheese, freshly shredded
- 1/2 cup Mozzarella cheese, freshly shredded
- 1/2 teaspoon salt (or to taste)
- 1/4 teaspoon black pepper (or to taste)
Instructions
- In a medium saucepan over medium heat, melt the butter.
- Add the minced garlic and sauté for 3–4 minutes, until fragrant.
- Add the heavy cream and cream cheese. Stir constantly until the cream cheese is fully melted and smooth.
- Stir in the Parmesan and mozzarella. Continue stirring until the cheese is completely melted and the sauce is smooth.
- Season with salt and pepper.
- Reduce heat to low and simmer for 3–5 minutes, stirring often, until the sauce thickens.
Serve immediately.
📖 Nutrition Information
Serving Size: ½ cup
Servings Per Recipe: 4
| Nutrient | Amount |
|---|---|
| Calories | 370 |
| Fat | 36 g |
| Protein | 8 g |
| Total Carbs | 4 g |
| Fiber | 0 g |
| Net Carbs | 4 g |
Disclaimer: Nutrition information is an estimate only and may vary based on brands used, portion sizes, and substitutions.
Notes & Tips
Shred your own cheese.
I always recommend shredding your own cheese because it melts better and has fewer fillers — a simple handheld cheese grater makes it quick and easy in under a minute.
Keep the heat low.
High heat can cause the cheese to separate. Gentle heat = silky sauce.
Too thick?
Add a splash of heavy cream to thin it out.
Too thin?
Let it simmer a little longer — it thickens as it cools.
What to Serve with Keto Alfredo Sauce
This sauce is delicious prepared as my Chicken Alfredo, making it a perfect creamy dinner option for busy weeknights.
It’s also great for dipping — especially with my keto chaffles or my Keto Almond Flour Bread which make an easy low-carb bread substitute for soaking up every last bit of sauce.
You can also serve this sauce over zucchini noodles, Palmini noodles, spaghetti squash, or roasted low-carb vegetables for a simple side dish.
Storage
Store leftovers in an airtight container in the fridge for up to 4 days.
Reheat gently on the stove over low heat, adding a splash of cream if needed.
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Final Thoughts
This Keto Alfredo Sauce is one of those staple recipes you’ll come back to again and again. It’s quick, comforting, and works for everything from weeknight dinners to meal prep.
Once you see how easy homemade Alfredo is, the store-bought versions won’t even compare.