Using a food processor, pulverize the Lucky Charms marshmallows into a fine powder. Set aside.
In a medium bowl, whisk together the pudding mix, cold milk, and Irish Cream for about 2 minutes until thickened.
Stir in the powdered Lucky Charms marshmallows until fully combined.
Gently fold in the Cool Whip.
Divide the pudding mixture into shot glasses or small plastic containers. Refrigerate until ready to serve.
Before serving, top with more Cool Whip and a sprinkle of Lucky Charms marshmallows for a festive touch.