Eggless Matcha Tiramisu Cake just takes 30 minutes of hands-on work and requires no cooking or baking. It is creamy, rich, and bursting with bitter-earthy matcha flavors.
In a small bowl, combine the sugar and matcha. Add a little bit of hot water and stir vigorously until well combined with no lump. Add the remaining hot water and stir to combine.
Let the mixture cool completely. Stir in the rum.
Mascarpone Cream
In a large bowl using a handheld mixer or stand mixer fitted with a whisk attachment, beat heavy whipping cream, confectioners' sugar, and vanilla extract on high speed until stiff peaks form.
Add mascarpone cream and beat on low speed until well incorporated. Refrigerate the mascarpone until using it.
Trim the ladyfingers to fit the pan (I use 8 ladyfingers for each layer).
One at a time, gently dip both sides of ladyfingers into the matcha simple syrup, then lay them on a single layer on the bottom of the pan. Spread one-third mascarpone cream over the top. Repeat the process for the second and third layers.