Place parchment in a 9 by 13 baking pan. Preheat the oven to 350.
Prepare flax egg and allow to gel for 10m minutes. The hot water will quicken the process.
In a large glass measuring cup place cashew milk and ACV. Whisk and set to the side the curdle.
In the meantime, in a separate bowl whisk together dry ingredients.
Add remaining wet ingredients into now “curdled” milk and whisk thoroughly.
Add wet to dry. Switch to a large spatula and fold the batter together. Slowly start to add boiled water. Stopping half way to mix completely and then continue with the rest of the water. The mixture may seem too thin but that is ok. Pour into the prepared pan. Tap the pan several times on the counter to release any air bubbles. Bake for 43-46 minutes until a toothpick comes out clean from the center of the sheet cake.
Once baked, allow to cool completely on a wire rack.
GANACHE INSTRUCTIONS
The night before, place the entire contents of the can into a blender and blend on high. Scrape the now blended coconut milk into a jar and place in the fridge overnight. When you are ready to make ganache, remove solidified milk from the fridge and place in a small saucepan with icing sugar. Heat until small bubbles appear. Remove from heat and add in chopped chocolate. Stir and then cover for 15 minutes. Once the ganache has cooled slightly, place in the fridge to cool and thicken.
Start with a crumb coat. A thin coat of ganache to cover the surface of the cake. I don’t worry about the sides. Place cake in the fridge to allow the crumb coat to set. Once set, continue icing your cake. I like to ice it in stages. After each coat, place it back in the fridge. Decorate with Cacao nibs or shaved chocolate would be lovely.
*Macros are provided as an estimate for convenience. Your final numbers will vary depending on ingredient brands, substitutions, and how you portion the recipe.