In a medium bowl, stir together graham cracker crumbs and milk until evenly mixed. Press evenly into the bottom of a 9-inch springform pan.
Chocolate Layer
In a large bowl or stand mixer, mix together milk and pudding mix until thickened. Mix in the melted Weight Watchers® Giant Chocolate Fudge Ice Cream Bar and the thawed whipped topping. Pour over the crust and use a rubber spatula to spread evenly. Freeze for 1 hour.
Top Layer:
Remove from freezer and spread the whipped topping over the chocolate layer and return to freezer for at least another 3 hours until frozen through. Sprinkle with remaining graham cracker crumbs just before serving. Serve immediately after removing from freezer.