Obtained online. http://www.somethingswanky.com/ooey-gooey-oreo-pie/
Preheat oven to 350ºF. Press the pie crust into the pan. Fill the pie crust with the crumbled Oreos. Set aside. Whisk together the melted butter, cocoa powder, sugar, eggs, vinegar, vanilla extract, and salt.
Pour the filling over the Oreo crumbles. Use a spatula to spread the filling evenly over the Oreos, and then to gently mix so that the filling is mixed in with the cookie pieces. Sprinkle chocolate chips over top.
Bake for 35-45 minutes, until the pie appears set in the middle. Let cool for at least 20 minutes before cutting and serving.