A high protein microwavable birthday cake.
Mix all the cake ingredients in a mug or small bowl. (If you'd like the cake to come out perfectly, mix in a bowl and transfer to a mug sprayed with nonstick cooking spray.)
Microwave for 50-60 seconds.
Mix the frosting ingredients in a small bowl. Either flip the cake out and frost the cake or pour the frosting on top of the mug cake and add sprinkles.