In a medium bowl, beat cream cheese until smooth (this is easiest if you use an electric hand or stand mixer).
Add in sugar and mix until combined and smooth.
Stir in vanilla extract.
Then fold in Cool Whip.
If you haven't done so already, crumble up your cookies. Leave them a bit chunky. You want to see larger bits of cookie in the finished pie. Gently stir in the crumbled cookies to the mixture.