Whisk together the hot water, coffee liqueur and espresso. Let the mixture cool.
¾ cup hot water, ¼ cup Kahlua, or coffee liqueur, 2 teaspoons espresso powder
In the bowl of a stand mixer fitted with the paddle attachment, or a large bowl using a hand mixer, beat the cream cheese and mascarpone until smooth and creamy.
2 cups cream cheese (2 - 8oz packages), 1 cup mascarpone cheese
Add the confectioners sugar, coffee liqueur, vanilla extract, espresso powder, and salt and continue to mix on medium speed until fully smooth and incorporated.
1 ¼ cup confectioners sugar, 2 teaspoons pure vanilla extract, ¼ teaspoon fine sea salt, ¼ cup Kahlua, or coffee liqueur, 2 teaspoons espresso powder
Place the bowl into the refrigerator to keep chilled.
In the bowl of a stand mixer fitted with the paddle attachment, or a large bowl using a hand mixer, on medium speed, beat the heavy cream until stiff peaks form.
1 ¼ cup heavy whipping cream
Remove the cheesecake filling from the refrigerator and gently fold in the whipped cream.
Pour half of the cheesecake mixture onto the prepared, chilled crust.
Dip a ladyfinger into the coffee mixture for 1-2 seconds, and immediately place it on top of the cheesecake layer. Repeat dipping the ladyfingers until they completely cover the first layer of cheesecake. You might have to break a few ladyfingers into pieces first so that they fit in place.
10-12 ladyfinger cookies
Pour and gently spread the remaining cheesecake on top of the ladyfinger layer. Refrigerate the cheesecake for at least 6 hours.
Run a butter knife around the edge of the cheesecake. Remove the cheesecake from the springform pan.