Make the espresso coffee and let it cool for a few minutes. Set aside while you are making the mascarpone cream.
In a large mixing bowl, add the mascarpone cheese, brown sugar, granulated sugar, kosher salt, and pumpkin pie spice. Mix with an electric hand mixer until well combined.
Add the pumpkin puree and mix until combined.
Add the cold heavy whipping cream and mix for another 3-4 minutes until the filling thickens.
Dip the ladyfingers quickly in the coffee (1-2 seconds) and lay them in an even layer in the 13 by 9 inch baking dish.
Top the soaked ladyfingers with half of the mascarpone mixture and smooth it out with a spatula. Add another layer of the dipped ladyfingers.
Transfer the rest of the filling into a piping bag with a star tip and make dollops of the cream all over the ladyfinger layer.
Cover with plastic wrap and place in the fridge for at least 4 hours to allow the ladyfingers to soften.
Generously top the tiramisu with plenty of cocoa powder and serve!
Notes
Make sure that you are using room-temperature mascarpone cheese in this recipe, this step makes it easier to mix the cheese with no unnecessary lumps, we don’t want that in your cream mixture.
Don't use fresh pumpkin puree for this. Fresh pumpkin puree usually has a lot of liquid and will make a runny filling. If you are using fresh pumpkin puree, make sure to drain as much liquid as possible.
Use high-fat mascarpone cheese. Using full-fat cream mascarpone ensuresthat your dessert will be stable.
Let your tiramisu chill in the fridge for at least 3 hours. We know it’s very hard to resist eating this delicious dessert right away, but you have to let it chill and soak up the flavors. We like to let it sit in the fridge overnight.
Scrape down the sides of the bowl frequently to ensure that you have a homogeneous mixture that has no cheese lumps.
Make sure that you make this dessert with the best quality ingredients that you can find and afford. The quality of the ingredients is what makes this dessert delish.