Using an electric mixer
, beat the mascarpone cheese
, melted chocolate, powdered sugar, and espresso powder in a large bowl until smooth and fluffy.
Divide half of the panettone
cubes among 6 wine
glasses or old-fashioned glasses. Sprinkle half of the liqueur over the panettone. Top with half of the mascarpone mixture. Repeat layering with the remaining panettone, liqueur
, and mascarpone mixture. Sprinkle the chocolate shavings over the trifles and serve immediately. (The trifles can be prepared 1 day ahead. Cover and refrigerate. Let come to room temperature before serving.)