Alfredo Sauce

I'm always up for a good Alfredo recipe. This one is really good and just perfect for what I was looking for. I got it off of a website online and sadly, can't remember where! Sorry! If I remember I'll post it on here so you all can go check it out! Enjoy!
Alfredo Sauce
1 pint heavy cream
1 stick butter
2 tbsp. cream cheese
1/2 c. grated Parmesan cheese
1 tsp. garlic powder
In a saucepan, combine butter, heavy cream, and cream cheese. Simmer this until all is melted and mixed well. Add the Parmesan cheese and garlic powder. Simmer this for 15-20 minutes on low.