Microwave Baked Potatoes

Place potatoes in a shallow backing dish with a bit of water in the bottom of the dish. (More than enough to cover the bottom, but less than halfway up the sides of the dish.) [This is why, Sweets, your potatoes became shriveled I'm guessing. The water prevents this.) You should also put a few fork holes in the potatoes for heat venting.
Bake on high 4 minutes.
Turn each potato over.
Bake another 4 minutes.
Turn all potatoes again.
Bake on half power 2 minutes, turn and bake another 2 minutes.
Remove from oven.
Check to see if potatoe is close to desired consistency by inserting a butter knife.
If not baked, half power, another two minutes and check again.
When potatoes are ready cut in half and insert butter. (Or spray with I can't believe it's not butter)
Wrap each potato in foil.
Let them remain wrapped until ready to use. (Or at least 15 minutes)
The potatoes will continue to cook in the foil and become a slight bit more tender.
This is for microwave oven with 700 watt power.