Bring a large pot of lightly salted water to a boil. Add pasta and cook for 8 to 10 minutes or until al dente; drain.
Combine heavy cream and butter in a Dutch oven or large, heavy saucepan over medium heat. Heat until butter melts, stirring occasionally; be careful not to bring mixture to a boil. Stir in Parmesan cheese, parsley, salt, pepper and garlic powder. Toss with cooked pasta and serve immediately.