Crush the Cookies: Place 24 Oreo cookies in a food processor or seal them in a ziplock bag and crush with a rolling pin until you have fine crumbs, about 1-2 minutes in the processor.
Combine with Butter: In a medium bowl, mix the Oreo crumbs with melted butter until the mixture resembles wet sand, about 1-2 minutes of stirring.
Press into Pan: Transfer the mixture to a 9-inch pie dish, pressing firmly into the bottom and up the sides using the bottom of a measuring cup or your fingers, creating an even layer about ¼ inch thick.
Chill the Crust: Place the prepared crust in the freezer for 10 minutes while you prepare the filling.
Prepare the Ice Cream: Remove the cookies and cream ice cream from the freezer and let it sit at room temperature for 3-5 minutes until it reaches a soft-serve consistency that's easy to spread.
Spread the Base Layer: Spoon half of the softened ice cream directly into your frozen crust, pressing gently to remove air pockets and create an even layer about 1 inch thick.
Add Chocolate Sauce: Drizzle half of the chocolate sauce over the ice cream layer, using a knife to swirl it throughout the filling.
Add Top Layer: Spread the remaining ice cream over the chocolate sauce, smoothing the top with a spatula for an even finish.
Final Drizzle: Pour the remaining chocolate sauce over the top and add extra drizzle if desired, letting it pool and drip slightly down the sides.
Freeze: Let the completed pie freeze for at least 4 hours or overnight before serving for best texture and flavor.