In a large mixing bowl, add sifted all-purpose flour + cocoa powder + baking powder + baking soda + salt + powdered sugar. Mix well.
To this mixture, add coconut oil + vanilla extract + soy milk. Mix & whisk until the batter is smooth.
Transfer the batter to a parchment-lined cake mould and bake for 40 minutes at 160 C (320 F).
Preparing chocolate ganache,
In a small mixing bowl, combine dark chocolate chips + hot coconut milk. Mix until the chocolate melts and transfer to your fridge. Let it chill for 2-3 hours in the fridge.
Once it's chilled, whisk the ganache until it's nicely aerated (don't over-whisk).
Pour the ganache over the cake. Gently spread and cover the cake with the ganache. Vegan chocolate cake is ready.
While preparing ganache, if chocolate chips aren't melting when mixed with hot coconut milk, you can combine them in a saucepan and heat over low-medium. Or you can simply microwave them for 30 - 30 seconds.