Place the Oreo cookies in a food processor and pulse until finely crushed, or place them in a sealed plastic bag and crush with a rolling pin.
Transfer the cookie crumbs to a medium mixing bowl and add the melted butter. Stir until the mixture resembles wet sand and holds together when pressed.
Press the crumb mixture evenly into the bottom and up the sides of a 9-inch pie dish, using the back of a measuring cup to compact it firmly.
Bake the crust in the preheated oven for 10 minutes, then remove and let it cool completely on a wire rack before filling.