In a small bowl, mix together the flour, baking powder, cocoa, powdered sugar and salt.
Make a well in the middle of the mixture and add the wet ingredients. Mix together the ingredients until fully combined.
Pour the mixture into a microwave safe mug. Place in the microwave and cook on high for 1 1/2 minutes and see if it’s done. If it’s not done, microwave for 30 more seconds. Let stand for one minute until eating.