First, combine the coconut oil and unsweetened baking bar (cut into small pieces) into a 12 oz microwave-safe coffee mug. Heat for 45 seconds on high in the microwave. Stir. Cook for another 15 seconds on high until completely melted. Stir again.
Step 2
Add the sweetener, baking powder, almond flour, cocoa powder, and mint extract to the mug. Stir well with a spoon until the egg is fully incorporated. The mixture should be smooth.
Step 3
Microwave on high for 45 seconds to one minute. The goal here is to cook the cake just enough that it is still soft and not overcooked. If you like a cake that is gooey in the middle, opt for closer to 45 seconds. The exact length of time will depend on your microwave.
Step 4
Remove the cake from the microwave and top with the chilled coconut milk and mint leaf. Enjoy!