Step 1

Place 4 ice cream sandwiches in a row on a serving plate.

Step 2

Use a piping bag fitted with a large star tip to pipe dollops of whipped topping over the ice cream sandwiches.

Step 3

Sprinkle chocolate chips and M&M's over the layer of whipped topping.

Step 4

Freeze until firm.

Step 5

Repeat the process with the remaining ice cream sandwiches, whipped topping and candies until you have 3 layers of ice cream sandwiches and 3 layers of whipped topping and candies. Freeze each layer until firm before proceeding with the next layer.

Step 6

Freeze the whole cake until firm, at least 1 hour.

Step 7

Drizzle the fudge sauce over the top of the cake. Cut into slices then serve.