Melt your butter and whipping cream on medium low heat in a saucepan and whisk until the mixture comes to a rolling boil.
Add the parmesan cheese to the pan.
Stir constantly with a whisk for 10 minutes or so, until the cheese has melted.
Remove from heat and let stand to thicken for about three to five minutes (it will be runny at first but it will thicken).
Pour over cooked pasta and toss.
Add chicken or shrimp on top & enjoy!