Preheat oven to 350° and grease a 12-cup muffin tin.
In a large mixing bowl, prepare brownie batter according to package directions.
Add batter to muffin tin and bake 25 to 27 minutes.
Once brownies are out of the oven, press a shot glass into the middle of each, making a shallow cup. Let cool completely.
Make Baileys filling: In a medium bowl using a hand mixer, beat together cream cheese, melted chocolate, and Baileys until smooth. Gently fold in Cool Whip.
Scoop filling into cooled brownie cups and top with more mini chocolate chips.
