Add pudding mix and milk to a medium bowl and whisk for 2 minutes, until well combined and starting to thicken. Pudding will be soft-set in 5 minutes. Refrigerate until ready to serve.
Use a food processor or large plastic baggie and mallet to crush the cookies.
Divide between six (6) serving bowls, Top with a thin layer of crushed sandwich cookies.
Decorate with three (3) gummy worms, and other candies, if using.