Creamy Alfredo Sauce Made with Half-and-Half

This quick Alfredo sauce made with half and half is incredibly creamy and delicious. If you don’t have heavy cream on hand, this version delivers the same indulgent texture and flavor. It comes together fast — toss with fettuccine for a simple weeknight dinner the whole family will enjoy.

Why you’ll love it

Half and half is an equal blend of milk and cream: richer than milk but lighter than heavy cream. In this recipe it creates a velvety sauce that still feels luxurious without the heaviness of all-cream versions.

This half-and-half Alfredo is:

• Lusciously creamy and quick to make — often my preferred texture over heavy cream.
• Ready in roughly 15 minutes, which is perfect for busy evenings.
• Kid-friendly and comforting, a reliable crowd-pleaser.

I like serving it with easy garlic bread and a simple green salad for a balanced, satisfying meal.

Key Ingredients

Unsalted butter – I use unsalted so I can control the final seasoning. If you only have salted butter, reduce any added salt and taste as you go.

Half and half – Equal parts milk and cream give a rich but not heavy sauce. Heavy cream will also work; whole milk can be substituted but the sauce will be slightly lighter. The flour in this recipe helps stabilize the sauce so it won’t separate.

Garlic – Adds savory depth; sauté briefly so it becomes fragrant but not bitter.

Parmesan – Freshly grated from a block melts smoothly and builds the sauce’s cheesy body. Pre-grated cheese will work but won’t produce the same silky texture.

Seasoning – Salt is important to lift the flavors in a rich sauce. Start with about ¼ teaspoon kosher salt and adjust to taste.

Parsley – Adds a bright, herbaceous note and a touch of color when sprinkled on top.

How to make Alfredo sauce with half and half

This recipe is straightforward and fast. Because the sauce cooks quickly, I usually boil the fettuccine first and set it aside so everything finishes at the same time.

Melt butter

Heat a large skillet or sauté pan over medium. Melt the butter, add the minced garlic, and sauté until fragrant, about 30 seconds. Watch carefully so the garlic doesn’t brown.

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Add flour, then half and half

Sprinkle the flour and salt into the butter and stir until you have a smooth paste, about 30 seconds. While whisking constantly, add the half and half slowly — about half a cup at a time — so the sauce emulsifies and smooths out. It may look slightly lumpy at first, but continue whisking and it will become a creamy white sauce.

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Add Parmesan cheese

Lower the heat to low, then stir in the freshly grated Parmesan until it melts completely and the sauce is smooth. Mix in the minced parsley, Italian seasoning, and a few cracks of black pepper. Remove the pan from the heat, add the cooked fettuccine directly to the skillet, and toss to coat evenly. Serve immediately with an extra sprinkle of parsley and a pinch of kosher salt if needed.

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Recipe Tips

• Use freshly grated Parmesan: It melts better and creates a silkier sauce than pre-grated cheese.
• Don’t skip the flour: The small amount of flour (or a gluten-free alternative) stabilizes the sauce and helps prevent separation when using lower-fat dairy.
• Add the half and half gradually: Pouring it in slowly while whisking helps you achieve a smooth consistency.
• Keep the heat moderate: Cook over medium to medium-low. Avoid boiling the sauce, which can cause it to separate or become grainy.

Storage Tips

• To store: Transfer the sauce to a clean airtight container and refrigerate for up to 4 days.
• Do not freeze: Cream-based sauces often separate and become grainy after freezing and thawing, so freezing is not recommended.
• To reheat: Warm gently in a skillet over low heat, stirring constantly until smooth. Reheat slowly to preserve texture.

FAQs

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