Melt the butter in a skillet over medium heat. Avoid cooking the butter on high, even if you're in a rush.
Add the cream cheese and garlic powder into the skillet once the butter is mostly melted. Stir until the cream cheese is melted.
Whisk in the heavy whipping cream and chicken broth.
Bring the mixture to a boil and then reduce to medium-low heat.
Stir in the parmesan and salt and pepper to taste.
Sauté the sauce until it begins to thicken. Remove it from the heat.
Serve over your choice of noodles.
Notes
Store any leftover sauce in an airtight container in the refrigerator for up to 4 days. Reheat gently on the stovetop over low heat, adding a splash of milk or broth if it has thickened too much.