Finely crush 9 OREO cookies in a food processor until resembling fine crumbs. Break the remaining OREO cookies in half and set aside.

In a mixing bowl, combine the crushed OREO crumbs with softened cream cheese until smooth. Shape into 12 balls about 1 inch in diameter.

Melt a small amount of semi-sweet chocolate in a microwave-safe bowl for 30 seconds. Dip one end of each lollipop stick in the melted chocolate, then insert it into the center of each cookie ball. Place them on a lined baking sheet.

Transfer the baking sheet with the cookie balls to the freezer for 10 minutes to firm them up.

Dip each chilled cookie ball fully into the melted chocolate. Allow excess chocolate to drip off before returning them to the baking sheet.

Cut the flat ends off the two cookie halves. Dip these edges in melted chocolate and attach them to the sides of each cookie ball to form wings.

Use mini candy button eyes and chocolate chips to create faces on the bats. Optionally, use white decorating icing for additional details.

Place the decorated pops back in the refrigerator for about 1 hour to set completely.