Scrub the sweet potatoes well and prick the on top of each potato a few times with a fork.
Place a trivet in the Instant pot, and arrange the potatoes in a single layer on the trivet. Add the water.
Secure the lid and make sure the steam valve is sealed.
Cook at high pressure for the time given for the size of the potatoes: 20 minutes for small, 30 minutes for medium, and 45 minutes for large. (See notes below.)
Allow the pressure to release naturally for 10 minutes. Then manually or quickly release the remaining pressure. Remove the lid and carefully remove the potatoes with tongs. Serve hot or let cool to room temperature before refrigerating in an airtight container for up to 1 week.
Video
Notes
Scrub the potatoes. As the skins are edible, there’s no need to peel sweet potatoes prior to cooking them. So it’s very important to clean them thoroughly.
A note about the skin: Skins will be soft and will split (they are not firm like baked potatoes). Fewer fork pricks will cause less splitting of the skin…but you have to prick the potatoes a few times! If not, they may explode in the Instant Pot.
General cook times: Cook time depends on the size of your potatoes.
Small potatoes: 6 to 8 ounces with a 2-inch thickness — cook for 20 minutes.
Medium potatoes: 9 to 14 ounces with a 3-inch thickness — cook for 35 minutes.
Large potatoes: 15 ounces and up with a 4-inch thickness — cook for 45 minutes.
If the potatoes are not fully softened when you open the pot: Return to high pressure and cook for an additional 5 minutes. It will not take long for the Instant Pot to come back to pressure again.