- Mash banana in a medium bowl until it forms a smooth paste.
- Add graham cracker crumbs, protein powder, mini marshmallows, and chocolate chips to bowl and mix to combine.
- Transfer dough to a microwave safe mug or ramekin. Microwave on high for 30-40 seconds
- Top with whipped cream and chocolate shavings, if desired (macros not included), and consume while the cookie is still warm!
No need to microwave over 40 seconds as this will keep the mug cookie soft and slightly gooey in the center.