Crush Oreo cookies in a food processor.
Melt butter and add to the cookie crumble.
Pack the Oreo mixture into the bottom of a pie dish and up onto the sides.
Once the crust is done, put it in the freezer for 30-45 minutes.
While the crust is setting up, take out the ice cream and let it soften.
Once your crust is set, fill the shell with the softened ice cream.
Put the pie back in the freezer for at least three hours.
Once the ice cream has firmed back up, prepare a piping bag with a large star tip.
Place fudge in the piping bag, and pipe until you cover the ice cream.
Put the pie back in the freezer for an hour. Then you are ready to serve.