Mix the Wet Ingredients: Add the egg, blended cottage cheese, and maple syrup to a microwave-safe mug or small bowl. Stir well to combine.
Add the Dry Ingredients: Add the chocolate protein powder, cocoa powder, and a pinch of salt to the mug. Stir to mix up the brownie batter. Sprinkle with chocolate chips.
Cook the Brownie in a Mug: Place the mug into a microwave and heat on high power for 90 seconds. When done, the center should still be a bit gooey (just like a lava cake). If it's not done after 90 seconds, microwave in 10-second increments until the brownie is done.
Let Cool, then Enjoy: Remove the brownie from the microwave and let it sit for a few minutes to cool, then enjoy your healthy sweet treat.
