Begin by washing the potatoes thoroughly and then slice them lengthwise.
Preheat your oven to 425°F and line a baking sheet with parchment paper.
Brush both sides of the potato halves with olive oil, then season them with kosher salt and black pepper.
Place two small pieces of butter on each potato half and generously sprinkle with grated Parmesan.
Bake the potatoes in the preheated oven until they are tender and the edges turn crispy and golden brown.
Once baked, cut open the potatoes and gently squeeze them to fluff the insides.
Add more butter if desired and top with your choice of toppings such as sour cream, grated cheese, chives, scallions, or cooked bacon.
