Step 1: Prepare the Crust
Add the chocolate sandwich cookies (including the cream filling) to a food processor and pulse until you have fine, even crumbs. You should have about 2½ cups of crumbs. Transfer the crumbs to a medium bowl, add the melted butter and a pinch of salt, and stir until the mixture resembles wet sand and holds together when pressed.

Step 2: Press Crust into Pan
Press the cookie mixture firmly and evenly into the bottom and up the sides of a 9-inch pie pan. Use the bottom of a measuring cup or glass to pack it down tightly, ensuring there are no gaps or thin spots. The crust should be about ¼-inch thick. Place the crust in the freezer for 15 minutes to set while you prepare the filling.

Step 3: Add First Ice Cream Layer
Remove your first ice cream flavor from the freezer and let it sit at room temperature for 10-15 minutes until it’s soft enough to spread easily but not melted. Scoop the softened ice cream into the chilled crust and spread it evenly using a rubber spatula or offset spatula, smoothing the top. Work quickly to prevent excessive melting.

Step 4: Add Sauce Layer (Optional)
If using, drizzle half of the warmed hot fudge or caramel sauce over the first ice cream layer. You can swirl it gently with a knife for a marbled effect, or leave it as a distinct layer.

Step 5: Add Second Ice Cream Layer
Repeat the process with your second ice cream flavor, spreading it evenly over the first layer. If using three flavors, add the third layer now. Smooth the top surface as evenly as possible.

Step 6: Initial Freeze
Cover the pie tightly with plastic wrap or aluminum foil, making sure it doesn’t touch the top surface. Place in the freezer for at least 4 hours, or preferably overnight, until completely solid.

Step 7: Add Final Toppings
About 10-15 minutes before serving, remove the pie from the freezer. Add your final toppings – pipe or spread whipped cream around the edges or over the entire top, drizzle with remaining sauces, sprinkle with chocolate chips or nuts, and add any other decorative toppings you like.

Step 8: Slice and Serve
Let the pie sit at room temperature for 5-10 minutes to make slicing easier. Dip a sharp knife in hot water, wipe it dry, and slice clean pieces. Wipe the knife between cuts for the neatest slices. Serve immediately and enjoy!