Preheat the oven to 350° F.
In a food processor, pulse chocolate sandwich cookies into crumbs (or place in ziptop bag and crush with rolling pin). Drizzle in melted butter and pulse to combine (or dump cookie crumbs into a large bowl and toss with melted butter).
Press crust into bottom and up sides of a pie pan (8 or 9-inch). Bake for 5-7 minutes, or until the crust is just set. Allow to cool completely before making the filling.