In a microwave-safe dish, combine the banana avocado and mash well.
Add in the remaining ingredients and mix until everything is combined.
Microwave on high for about 3-4 minutes, or until the cake is set and a toothpick inserted in the center comes out clean. Cooking time may vary depending on your microwave, so start with 2 minutes and check.
Allow the cake to cool slightly before enjoying. Slice into bars.
Serve and enjoy!
