Place the chocolate cookies in a plastic bag and crush them into fine crumbs using a rolling pin. Alternatively, pulse them in a food processor until they resemble soil. Set aside.
In a mixing bowl, whisk the cold milk and instant chocolate pudding mix together until thickened. This should take about 2 minutes. Refrigerate the pudding while preparing the next step.
In another bowl, beat the cream cheese and powdered sugar together until smooth and creamy. Add the vanilla extract and mix well.
Gently fold the whipped topping into the cream cheese mixture. Once incorporated, fold in the prepared chocolate pudding to create a light, fluffy filling.
In your chosen serving dish, layer the dessert as follows:
Start with a layer of cookie crumbs.
Add a layer of the pudding mixture.
Repeat the layers until all ingredients are used, ending with a cookie crumb layer on top.
Garnish the top with gummy worms or candy rocks, pressing them lightly into the crumbs.
Cover and refrigerate for at least 1 hour to set and enhance the flavors.
Serve and EnjoyScoop into bowls or serve directly from the dish for a fun, delicious treat!