Place the potatoes/yams in the bottom of the pot and then add all the other ingredients. Stir to mix well and evenly coat the chunks with sugar and spices.
Close and lock the lid, turning the steam release valve to close. Press Steam and adjust time up to 15 minutes (or manual high pressure.) Press Start/Stop.
When the cooking cycle is over, open the steam release valve to do a quick release.
Remove cooked yams to a serving dish with a slotted spoon. If desired, top with mini marshmallows and broil for 30 seconds to brown.
Notes
Nutritional info includes both pecans and marshmallows
Add chopped pecans for extra crunch
Use a kitchen torch or oven broiler to brown marshmallows