In a food processor crumble the Oreos and then mix in the melted butter. Press into the bottom of a 9 inch springform pan
Beat the cream cheese and sugar together in a stand mixer with a paddle attachment for 3 minutes.
On low beat in the vanilla extract and then the vanilla bean scrapings.
Then add the eggs one at a time, beating just until they are combined. Scrape the bowl one final time, and beat again for another 30 seconds.
Pour over the Oreo cookie crust and bake for 35 minutes. Then turn the oven off and crack the door open and let the cheesecake sit in there for an hour.
Cover and refrigerate for at least four hours.
While waiting for the cheesecake to cool, mix together the butter, cream, vanilla, cream cheese, and powdered sugar. Refrigerate and pipe onto the cheesecake just before serving.