Lightly brush or spray a 9-inch pie pan with oil.

Place the cookies in the bowl of a food processor (do not scrape out the filling) and process until they become fine crumbs. If you don’t have a food processor, you can put the cookies in a large food storage bag and crush the cookies with a rolling pin. Remove and reserve about ¼ cup of cookie crumbs for topping the pie. Add 2 tablespoons oil to the remaining cookie crumbs, mix well, and press the mixture firmly into the prepared pan.

Whip 2 cups heavy cream until stiff peaks form. Remove the cream from the bowl, add the cream cheese and peanut butter and beat until fully combined and smooth. Beat in 1 cup powdered sugar. Fold in the whipped cream in three batches. Put the mixture into the prepared crust, cover with plastic wrap, and refrigerate for 2 hours or overnight.