Preheat oven to 400°F. Line a baking sheet with parchment.

Rub potatoes with oil, then sprinkle with salt and pepper. Bake until tender, about 30 minutes.

Meanwhile, place sour cream and butter in a medium bowl, along with black pepper to taste.

Remove potatoes from oven and carefully slice each in half. Scoop out the center of potatoes, leaving enough around the edges to hold the potato shape. Place the scooped potato into the bowl with the sour cream and butter, and mash.

Transfer the mashed potatoes to a piping bag fitted with a 3/8 inch star tip.

Spread a layer of grated cheese in each potato shell, then pipe in the mashed potatoes. Sprinkle with smoked paprika and bake until starting to brown on top, about 20 minutes.