Preheat the oven to 180C.
Mix all the dry ingredients in a bowl. In another bowl, combine all the wet ingredients.
Then pour the wet ingredients into the bowl with the dry ingredients and whisk. Mix until the batter just comes together, don’t over mix it.
Pour the batter into a baking pan - estimated size 30x20cm.
Bake it for ~20 minutes until the top is slightly golden.
Let it cool.
Cut the sponge cake into two layers because otherwise, it will be too thick. We'll use just one layer and you can save the other one for later. Maybe eat it for breakfast with some fruits and yogurt on top or make another tiramisu later. Store the extra one in the fridge.
Prepare the coffee syrup by mixing all ingredients, then let it cool.
Now, using a food processor, blend together all the ingredients for the vegan mascarpone, until creamy.
Place the sponge cake layer on a pan. Generously pour over the coffee syrup, to cover the layer evenly.
Top the vegan tiramisu base with the “mascarpone” cream. Sift it with cocoa powder and transfer it to the fridge.
Serve after cooling completely.