1: In a bowl, combine pudding and milk. Whisk until pudding thickens and sets. Place bowl in refrigerator to chill, about 5 minutes.
2: Take your Caramel Magnum bars, chop them into small pieces.
3: In separate bowl, whip cream until it starts to thicken. Add powdered sugar and vanilla, whip until stiff peaks form.
4: Fold in half of the Magnum bars - the other half reserve for the topping.
5: In a 13x9 dish, begin layering. Chocolate cookies, Caramel Magnum-infused pudding, whipped cream. Repeat steps, ending with a layer of whipped cream on top.
6: Garnish with chopped Magnum bars, caramel sauce, and magic chocolate shell.
7: Freeze for at least 3 hours. Thaw in the refrigerator for 1-2 hours before serving.