01 -
Lightly grease the mug to prevent sticking.
02 -
In the greased mug, whisk together Nutella, egg, all-purpose flour, salt, and optional ingredients if using, until smooth.
03 -
Microwave on high for 60 seconds, then check doneness; extend cooking time slightly if needed.
04 -
Allow to rest for 1 minute to complete setting.
05 -
Enjoy warm directly from the mug.