A high protein treat for the white chocolate macadamia nut fan.
Mix all the ingredients in a mug or bowl. Stir well. (For best results, transfer to a mug or bowl sprayed with nonstick cooking spray.)
Microwave for 90-105 seconds, watching for overflow depending on the size of your mug or bowl. If the mug cake is close to overflowing, finish the remaining cook time in 5-second intervals.