Using a fork, prick holes in each potato. Place the potatoes in a microwave safe dish and heat on high for 15 minutes until tender. Use oven mitts to remove cooked potatoes from microwave and set aside for 2 minutes or until cool enough to handle.
Using a knife slice lengthwise on the top of each potato. At the same time push each end of the potato inward causing the top to break open and potato to fluff up. Repeat with remaining potatoes.