Prepare the vegan mascarpone by beating the cream cheese, butter, and sugar together until fully combined.
Prepare the vegan mascarpone cream by beating the vegan whipping cream until stiff peaks form, then beat in the sugar, pure vanilla extract, vanilla bean paste, cornstarch, and vegan mascarpone until fully combined.
One at a time, dip half of the ladyfingers into the brewed espresso, and array them into a layer in a deep tray (i.e. the serving dish). Top with half of the mascarpone cream, pressing it in to fill gaps. Repeat for the second layer, then liberally dust with cocoa powder.
Place the dish into the fridge to chill for at least 8 hours.