Add the flour, cocoa powder, sugar, salt and baking powder to a mug. Stir or whisk to combine.
Pour in the oil, non-dairy milk and vanilla into the mug with the dry ingredients and stir well with a spoon. Sprinkle the chocolate chips on top.
Cook in the microwave for 40 seconds. It will likely be a little undercooked in the middle at this point, which is my preference, but if you want it cooked more, microwave it another 10-20 seconds.
Serve immediately.
