Process Oreos into fine crumbs using a food processor or a thick plastic bag and rolling pin. Put crumbs in pie plate.
Melt butter and add to Oreo crumbs. Mix with hands until all of the crumbs are evenly coated in butter.
Press into a crust covering the bottom and sides of the pan. It can be helpful to use the bottom of a class or measuring cup to apply even firm pressure.
Chill the pie crust for at least 10 minutes to set the butter, then fill with your favorite no bake pie filling.