Fill a small microwave-safe bowl roughly 2/3 full with water.
Crack the egg and carefully slide it into the water.
Place the bowl in the microwave at full power for 50 seconds. Adjust the time based on your preference: less time for a runnier yolk, more time for a firmer yolk. Be aware the yolk may pop during cooking.
Carefully remove the bowl from the microwave (it will be hot).
Pour off the water, leaving the poached egg in the bowl.