This simple recipe reminds you sweet potatoes were considered a dessert in mid-nineteenth century Virginia.
Heat oven to 400 degrees. Line a baking sheet with parchment paper or aluminum foil, and set aside. Rub potatoes with vegetable oil, and place on the prepared baking sheet. Bake in the oven until the potatoes can be easily pierced with a knife, 40 to 45 minutes.
Slit potatoes open lengthwise, and sprinkle with salt and pepper. Top with a generous dollop of sour cream, sprinkle with dark-brown sugar, and serve immediately.
Rubbing a touch of vegetable oil on the potato before baking will add a nice sheen to the skin.