Bring A Large Pot Of Lightly Salted Water To A Rolling Boil Over High Heat; Stir In The Frozen Ravioli And Return To A Boil. Cook Uncovered, Stirring Occasionally, Until The Ravioli Float To The Top And The Filling Is Hot, 6 To 8 Minutes. Drain. Meanwhile, Bring The Half-And-Half To A Simmer In A Saucepan Over Medium Heat. Whisk In The Gouda Cheese Until Melted; Season With Parsley And White Pepper. Pour The Sauce Over The Cooked Ravioli To Serve.