You've never prepared an easier dessert! A quick stir and it cooks into a cakey confection in 1 minute of microwaving! The mug will be hot so handle carefully.
In a small mixing bowl combine the whisked egg, peanut butter and sugar. Using a fork, mix the ingredients to fully combine.
Stir in the chocolate chips.
Spoon the batter into a 8-ounce (volume/liquid) mug or larger.
Place in the microwave and cook on high for 1 minute. Allow to cool slightly before eating. Note: the mug will be very hot, take care when handling it.