Ice Cream Sandwich Cake

from the blog site:http://jackandjillofalltrades.blogspot.com/
I made this cake in a jelly roll pan and it's huge!

Unwrap 22 ice cream sandwiches and place in pan lined with aluminum foil.
Spoon out 1.5 quarts of Oreo ice cream softened over tops of ice cream sandwiches.
Spread it around evenly & put in freezer.
Make Ganache - 1 cup heavy cream, 2 cups chocolate chips and 4 tbsp butter - melt, whip and cool. Then spread ganache over ice cream layer.
Make whipping cream (or buy some): 2 cups heavy cream, 1 tsp vanilla & 1/2 cup powdered sugar. Whip together until fluffy. Spread evenly over ganache.
Take 20 Oreos and put them in a zip lock bag. Crush by rolling a glass or a rolling pin over the top of the bag. Sprinkle the Oreos over the top of the whipped cream and place in freezer for 4 hours or more.