In a large bowl, blend the softened cream cheese with the confectioners' sugar and vanilla essence until the mixture is light and fluffy.
Incorporate the crushed ladyfinger cookies, cooled coffee, and coffee liqueur (if desired) into the cream cheese mixture, stirring gently until everything is evenly mixed.
Cover the bowl with plastic wrap and place it in the refrigerator for about an hour, allowing it to firm up for easier handling.
Once the mixture is chilled, scoop out small portions and roll them into balls using your palms. Arrange the formed bites on a baking sheet lined with parchment paper.
In a microwave-safe bowl, melt the dark chocolate chips in 30-second bursts, stirring after each interval until completely smooth.
Carefully coat each bite in the melted chocolate, letting any excess chocolate drip off before placing them back on the parchment-lined sheet.
Before the chocolate hardens, dust the tops of the bites with cocoa powder for a finishing touch.
Chill in the refrigerator for an additional 30 minutes to set the chocolate.