Cling wrap the inside of a 9 inch springform pan.
Smooth out a layer of slightly melted vanilla ice cream. Freeze completely.
Mix crushed oreos and fudge sauce. Spread a thick layer on top of vanilla layer. Freeze completely .
Spread a layer of slightly melted chocolate ice cream on top and freeze completely.
Flip out of pan once frozen solid, remove cling wrap and decorate with whipped topping.