Can I boil an egg in the microwave?

It is never safe to microwave an egg that is still in its shell, as the buildup of steam inside the egg can cause it to explode. Therefore, hard- or soft-boiling eggs using a microwave is a very bad idea.

The safest way to prepare eggs in a microwave using water would be to poach them. Be sure to pierce the yolk membrane to prevent a similar steam-pressure explosion from occurring. And remember that the microwaves will also be heating the egg itself, not just the water it's floating in, which means that the yolk won't be as soft as with eggs poached over a stove.