Reference: Instagram recipe
Mash the banana.
Add eggs, sugar, and vanilla extract, then mix well.
Sift in flour, baking powder, and salt, then mix everything together.
Add the banana to the batter and mix evenly.
Pour the batter into a pan and bake in a preheated oven at 170°C (338°F) for 30 minutes.
Mix mascarpone cheese, heavy cream, and sugar to make tiramisu cream.
Spread the tiramisu cream over the cooled cake and dust with cocoa powder.
Cut into four pieces and eat only one slice.