Preheat oven to 175 degrees celsius. Grease and line a 8x6 inch cookie sheet with baking paper. Set aside.
Whisk Soy Milk and Apple Cider Vinegar in a bowl set aside for 5 minutes to curdle. Sieve the Pastry Flour, Baking Powder and Baking Soda into a bowl. Set aside.
In another bowl, whisk Vegan Butter, Sugar and Salt till light and fluffy, about a minute. Whisk in the Vanilla Extract.
Alternate whisking in the Soy Milk mixture and dry ingredients, starting with 1/3 of the dry and ending with the last third of the dry mixture.
Spread mixture out onto prepared cookie sheet and bake for 20 minutes, or until cooked through. It's okay if you over bake it slightly, it doesn't make a difference.
Mix Coffee, Kahlua and Sugar together till the sugar has dissolved. Set aside.
Vegan Mascarpone Filling
In a high speed blender, combine Cashews, Agave, Coconut Oil, Salt, Vanilla and Soy Milk. Blend thoroughly until smooth and silky.
Divide mixture into half. For Vanilla, use first half of mixture and thoroughly whisk in extra 1/4 cup Soy Milk and 1 tablespoon Coconut Oil. Set aside.
For Coffee Cream, blend second half of Mascarpone mixture with Kahlua and Espresso.
:To assemble, have ready a tiramisu dish or individual ramekins/glasses. Cut a piece of sheet cake to fit the bottom of your ramekin or glass. Dip in Soaking Syrup for just a second or two and place into the bottom of your vessel.
Top with a layer of Vanilla Cream and dust with Cocoa Powder. At this point, freeze for 10 minutes.
Once out of the freezer, top with a layer of Coffee Cream. Freeze for 10 minutes.
Repeat process once more - soaked cake, vanilla cream and coffee cream - freezing cream layers for 10 minutes before continuing.
Once complete, dust the tops of you Tiramisu with cocoa powder and leave in the fridge for at least 4-6 hours to firm up before eating.
TO STORE: Tiramisu should always be stored in the refrigerator, completely covered. It will keep well for at least a week.TO FREEZE: Place leftover tiramisu into a sealable container and store in the freezer for up to 6 months.