1. Add all the dry ingredients (flour, sugar, cocoa powder, baking powder, and salt) to a mug and mix until combined.
2. Now add all the remaining ingredients except the vegan chocolate chips and combine by mixing.
3. Add the chocolate chips (if using) and mix them through.
4. Cook in the microwave on high for 1-2 minutes, watching to make sure it doesn’t spill over.
5. Serve immediately.