Add crushed cookie crumbs to a bowl reserving ½ cup for the top. Add butter and mix well. Press into a greased 9×13 pan.
Spread softened ice cream over crust and freeze for 2 hours.
Drizzle warm fudge over ice cream and freeze for 1 hour.
Add whipped topping and sprinkle with reserve Oreos and freeze for 2 hours. Remove from freezer and let it set out for 15 minutes before serving. ENJOY!