Soften the vanilla bean ice cream for 20 minutes. In the meantime, chop the Reese's peanut butter cups into small chunks to top the ice cream cake with at the end. Line a 2.5 gallon Tupperware container with aluminum foil. Use plenty so that you will be able to wrap the foil around the cake at the end.
Lay 4 ice cream sandwiches down in 2 rows.
Add half of the softened vanilla bean ice cream and spread to cover the surface of the ice cream sandwiches.
Add magic shell chocolate fudge and Reese's peanut butter topping.
Repeat steps 2-4 for the second layer.
Separate the cookie/wafer parts of the remaining two ice cream sandwiches length-wise.
Lay ice cream sandwich halves over the top of the final layer.
Spread the entire container of cool whip over the ice cream sandwich cake. Cover the top and the sides of the cake completely.
Cover the cool whip with magic shell chocolate fudge, Reese's peanut butter topping and the chopped up Reese's peanut butter cups.
Tightly wrap the entire ice cream sandwich cake with the foil. Cover the 2.5 gallon Tupperware container. Allow the cake to freeze overnight before serving.
When ready to serve, remove the cake from the freezer for about 5 minutes in advance to soften slightly. Slice the ice cream sandwich cake. Enjoy!