Place cookies in a ziplock-lock bag and smash with a rolling pin or glass bowl. (Alternatively can use food processor/blender).
In a medium bowl combine the lemon pudding mix with the cold milk and whisk until thickened (about 2 minutes).
Fill the popsicle molds half way, then add a layer of the cookie crumbs.
Fill the rest of the way with the pudding and then finish with another layer of cookie crumbs.
Place the sticks in and freeze for at least 6 hours or overnight.
When ready to serve, let sit on the counter for 5 minutes before removing from mold (or run under hot water). Enjoy!