A microwave muffin recipe generally follows the same rules. You need to mix the ingredients first, then microwave them on high for about 3 1/2 minutes. For example, this sweet potato muffin recipe for two takes some pretty basic materials plus some leftover sweet potato. It can be prepared in about 5 minutes.
Mix together the egg and sweet potato in the mug. Mash well.
Add the remaining ingredients, and blend them together.
Place the mix in the microwave and cook it for about 3 1/2 minutes. The muffin will rise high over the mug lid, then drop down when the microwave cuts off.
Remove the muffin from the microwave and let it cool for 1 minute.
If the muffin is too moist, the next time you try one cook it a few seconds longer. If it is too dry, cook it for a few seconds less.