Prepare the Coffee Mixture: Combine cold espresso, coffee liqueur, and espresso powder. Set aside.
1 cup cold espresso, 2 tablespoons coffee-flavored liqueur, 1 tsp espresso powder
Make the Mascarpone Filling: Beat heavy cream until stiff peaks form (about 4 minutes).
In separate bowl, cream together butter and cream cheese. Add powdered sugar gradually until light and fluffy, vanilla and salt if using unsalted butter.
1 cup 227g unsalted butter, softened at room temperature, 1 brick
Fold in mascarpone gently, then fold in whipped cream.
1 cup/8oz
Assembly: Quick-dip each ladyfinger in coffee mixture (1-2 seconds) then add to 9x13 dish.
Spread half the mascarpone mixture and repeat the layers.
Dust with cocoa powder. Chill 6-8 hours or overnight
Cocoa powder & chocolate shavings for dusting the top
Easter Version: Top with chocolate mini eggs and optional chocolate shavings just before serving so that the dye on the eggs doesn't run into the frosting.