Pierce the potato with a fork multiple times to allow steam to escape during cooking.
Place the potato in the microwave, ensuring it's not touching any other potatoes if cooking more than one. Cook on high for 3 to 4 minutes.
Carefully flip the potato and cook for an additional 3 to 4 minutes on high. If cooking additional potatoes, add 1 minute of cooking time per side for each extra potato.
Test the potato for doneness by piercing it with a knife; it should be tender throughout.
Let the potato rest for 1 minute to cool slightly, then remove from the microwave. If not fully cooked, continue microwaving in 1-minute increments until tender.