In a large mug or a soup bowl, mix together the protein powder, peanut butter powder, coconut powder, Sverve, baking soda, cream of tartar, egg and coconut creamer.
Microwave for 2 minutes, and let cool for a couple minutes.
While the cake is cooling, mix together the frosting. If the cream cheese isn't room temperature, microwave it for just a couple seconds to make it easier to combine.
Spread the frosting on the cake. It's not the easiest to spread, BUT it tastes amazing, so I don't worry about it looking beautiful too much.
Enjoy while it's still a little warm!