01 -
Set the oven to 220°C (425°F) to preheat while preparing the sweet potatoes.
02 -
Wash, scrub, and dry the sweet potatoes thoroughly. Arrange them evenly on a foil-lined baking sheet.
03 -
Rub each sweet potato with olive oil and sprinkle with kosher salt. Prick all over with a fork to allow steam to escape during baking.
04 -
Bake in the preheated oven for 40 to 60 minutes, depending on size. Begin checking after 45 minutes. Potatoes should be tender when pierced with a fork.
05 -
Let the sweet potatoes cool for 5 minutes. Split each open lengthwise and gently squeeze to open. Top with a portion of unsalted butter and freshly cracked black pepper before serving.