1. Prepare a 9-by-13-inch baking dish.
2. In a small bowl, whisk coffee, sugar, apple cider + vanilla bean paste, and vanilla. Set aside.
3. In a large bowl, mix pumpkin, brown sugar, cinnamon, ginger, nutmeg, and salt. Add mascarpone and combine.
4. In another bowl, whip heavy cream, confectioners’ sugar, and vanilla to stiff peaks.
5. Fold half of the whipped cream into the pumpkin mixture. Reserve remaining cream.
6. Dip ladyfingers in coffee mix for 10 to 15 seconds. Layer in the dish.
7. Spread half of the pumpkin mascarpone over ladyfingers.
8. Repeat with another layer of soaked ladyfingers and pumpkin mascarpone.
9. Top with reserved whipped cream. Dust with cocoa powder.
10. Chill for at least 6 hours before serving.