In a Bowl; add oreo cookie crumbs, melted butter and mix it well.
Now turn the mixture into a 9- inch pie plate or baking dish, press mixture in bottom and up side. Refrigerate for 30 minutes.
Melt the chocolate in a double boiler and keep it aside.
In a sauce pan heat, the cream to a low simmer then pours it on the top of melted chocolate.
Now whisk it until the melted chocolate and cream are completely combined.
Add butter, mix it well until smooth and thoroughly mixed.
Remove the oreo crust from the refrigerator and spread the chocolate filling inside. Place the pie in the refrigerator for a couple of hours until ready to serve.
Top the pie with chocolate shavings or oreo crumbs, cover and refrigerate leftovers.