Step 1

Mix finely crushed cookie crumbs with melted butter. Press into the bottom of a 13 x 9-inch pan. Refrigerate until firm, about 1 hour.

Step 2

Beat softened cream cheese until smooth. Add the sugar and vanilla; beat well.

Step 3

Fold in whipped topping and coarsely chopped chocolate sandwich cookies.

Step 4

Spread cream cheese mixture on top of crumbs.

Step 5

Chill for at least 4 hours before serving.

Step 6

Top with additional coarsely chopped cookies if desired.