Gather all ingredients.

In a medium, non-stick saucepan, melt the butter over medium heat.

Add the cream cheese and garlic powder, stirring with a whisk until the mixture is smooth.

Gradually add the milk, a little at a time, whisking to smooth out any lumps.

Stir in the grated Parmesan cheese and ground black pepper.

Remove from heat once the sauce reaches your desired consistency. It will thicken quickly, so thin it with milk if needed.

Toss the sauce with hot pasta to serve.