1Preheat the oven to 300 degrees F (150 degrees C). Scrub the potato, and pierce the skin several times with a knife or fork. Rub the skin with olive oil, then with salt.
2Place the potato in the preheated oven, and bake for 90 minutes, or until slightly soft and golden brown. Slice the potato down the center, and serve with butter and black pepper. Sprinkle shredded Cheddar cheese over the top, if desired.
Footnotes
Variation
For a treat, try slicing the very top of the potato off rather than slicing it in two, forming a 'lid'. Scoop out the fluffy contents of the potato, keeping the skin intact. Mix the potato in a bowl with butter, grated cheese and black pepper, then spoon the mixture back into the skin. Replace the lid and serve.
Tip
Aluminum foil can be used to keep food moist, cook it evenly, and make clean-up easier.