Put ice cream in the container on the counter to soften slightly. When softened, put the ice cream into a large mixing bowl and stir it until it’s a soft serve consistency. Spread it evenly in the Oreo crust. Don't over fill the crust; you may not need all the ice cream.
Put it into the freezer to firm up for at least an hour.
Remove from pie from the freezer and decorate with whipped cream and grated chocolate if desired.