Take your ingredients out and let the frozen ingredients thaw a bit to make them easier to work with.
Put two rolls of Oreos into a food processor and blend until they are all crumbs. You can also use a plastic bag and rolling pin or a blender.
Transfer crumbs to a medium bowl and pour entire bottle of Magic Shell on top of crumbs. Mix well to coat all crumbs in the Magic Shell.
Line the sides of a 9 x 13 pan with Cool Whip.
Scoop out the first flavor of ice cream and smooth it out in the bottom of the pan.
If needed, place cake in the freezer for a few minutes to let the ice cream harden up a bit.
Spread out the chocolate crunchies evenly on top of the first layer of ice cream. If you chose not to put the cake in the freezer before, do so now to let the layers firm up a bit. This will help keep the crunchies from shifting when you add the next layer.
Scoop out the second flavor of ice cream into the pan and smooth it out to make an even top layer.
Spread cool whip on top of the ice cream to create a nice top layer of "icing".
Add whatever toppings you want on top. You can add sprinkles, nuts, cherries, candy etc.
Place in freezer for a few hours for the cake to solidify into one uniform cake.
Slice and enjoy!