01 -
Preheat the oven to 425°F and line a baking sheet with aluminum foil.
02 -
Use a fork to pierce each Japanese sweet potato several times to allow steam to escape during baking.
03 -
Place the pierced sweet potatoes on the prepared baking sheet and bake for 45 to 60 minutes until the skins puff and the interior is tender when pierced with a fork.
04 -
Slice open the baked sweet potatoes and fluff the flesh with a fork. Season with sea salt and freshly ground black pepper. Top with a pat of butter or miso butter and garnish with fresh cilantro if desired.