Drain and rinse the soaked cashews. In a blender or food processor, combine the cashews, almond milk, maple syrup, vanilla extract, and salt. Blend until smooth and creamy.
In a large mixing bowl, whisk the aquafaba and granulated sugar until stiff peaks form. Gently fold in the cashew cream mixture until well combined.
In a separate bowl, mix the coffee or espresso and the coffee liqueur together.
To assemble the tiramisu, dip the ladyfingers in the coffee mixture, making sure to not soak them too much. Place a layer of ladyfingers in the bottom of an 8x8 inch dish.
Spread half of the cashew cream mixture over the ladyfingers. Repeat with another layer of ladyfingers and cream mixture.
Dust the top of the tiramisu with cocoa powder. Cover and refrigerate for at least 2 hours, or overnight, to allow the flavors to meld and the ladyfingers to soften.
Before serving, let the tiramisu sit at room temperature for about 15 minutes to soften. Serve and enjoy!