Make Olive Garden's Alfredo Sauce Recipe at home in just 20 minutes! Pair it with Fettuccine for an easy dinner idea the whole family will love!
Whisk in the flour. Gradually add the heavy cream, then the milk, whisking constantly.
Reduce the heat to low once the sauce begins to bubble. It will continue to thicken as it simmers.
Slowly sprinkle in the cheeses, continuing to whisk.
Note: You may be tempted to add more cheese to thicken to sauce, but it continues to thicken upon standing and even when added to the pasta.
Alfredo sauce is generally thinner than you may think and thickening it further may make it too rich.