01 -
In a large bowl, whisk the vanilla pudding mix with 3 cups of cold milk for 2 minutes. Let sit for 5 minutes to thicken.
02 -
Fold the thawed Cool Whip into the pudding mixture until smooth and fluffy.
03 -
Pour the remaining ½ cup of milk into a small, shallow bowl.
04 -
Quickly dunk each Chips Ahoy! cookie into the milk for 1 second, then lay them in a single layer at the bottom of a 9x13-inch glass baking dish. Spread half of the fluffy pudding mixture over the cookie layer.
05 -
Add a second layer of milk-dunked cookies, followed by the remaining pudding mixture. Top with a final layer of dunked cookies.
06 -
Sprinkle mini chocolate chips over the top layer. Refrigerate overnight for at least 8 hours before serving.