Place your skillet on medium heat.
Add the butter and let it melt.
Don't let it brown or burn.
This takes about one minute.
Add minced garlic to melted butter.
Stir it for 30 seconds only.
You want it fragrant, not burnt.
Remove from heat if it cooks too fast.
Slowly add heavy cream to the pan.
Stir everything together gently.
Bring it to a gentle simmer.
Let it cook for 2 minutes.
Remove pan from heat first.
Gradually add Parmesan cheese while whisking.
The sauce will thicken beautifully.
Keep stirring until smooth and creamy.
Add salt, pepper, and nutmeg now.
Taste and adjust as needed.
The sauce should coat your spoon.