In a medium saucepan over medium heat, melt the butter. If using garlic, sauté it for about 30 seconds until fragrant (don’t let it brown).
Add the Cream:
Slowly pour in the heavy cream, stirring to combine. Bring to a gentle simmer—do not let it boil.
Add Cheese and Seasoning:
Reduce heat to low and stir in the Parmesan cheese. Keep stirring until the cheese is fully melted and the sauce is smooth. Season with salt, black pepper, and a tiny pinch of nutmeg if using.
Serve Immediately:
Toss with freshly cooked pasta, pour over vegetables, or use as a base for chicken Alfredo. Serve warm.