Combine Butter, Heavy Cream and Cream Cheese in sauce pan and simmer on medium/low until all melted and mixed smoothly. Add Parmesan cheese and garlic powder simmer 20 minutes on low. Stirring regularly. Let sauce simmer as long as possible for the best flavor.
Take your thawed chicken and sprinkle it with garlic salt and pepper. Grill it on the grill or on the foreman until it's done and a little black. Once it's done shred it or chop it up you can then put it in the sauce or you can spread it over cooked alfredo noodles. Once sauce is done it will be creamy and thickish then pour it over the chicken and the cooked alfredo noodles.
You can do this recipe with or without chicken it is delicious both ways.