Melt butter in a saucepan over medium heat. Add minced garlic and sauté for 1-2 minutes until fragrant.
Add cream cheese and heavy cream to the saucepan. Whisk until the cream cheese is melted and the sauce is smooth.
Stir in Parmesan cheese, salt, and pepper. Simmer for 5-7 minutes, stirring occasionally, until the sauce has thickened to your desired consistency.
Serve immediately over your favorite pasta, vegetables, or as a dipping sauce.
Notes
For a richer flavor, use full-fat cream cheese and heavy cream. You can also add a pinch of red pepper flakes for a touch of heat. This sauce can be stored in the refrigerator for up to 3 days.