In a saucepan melt butter.
When butter is melted add cream cheese.
When the cream cheese is softened add heavy cream.
Add garlic powder.
Simmer this for 15-20 minutes on low.
You may wish to season with a little salt and pepper.
Turn off heat and add cheese.
Stir until melted.

Pour over noodles, tortellini, etc.
You can add broccoli, peas, chicken, ham, etc.