Prep the Potatoes. Scrub the potatoes well under running water and pat dry with a towel. Prick each potato a few times with a fork to allow steam to escape during baking.
Oil & Season. Rub each potato generously with olive oil and sprinkle with coarse salt. This step is key for achieving crispy, flavorful skins.
Bake to Crispy Perfection. Preheat your oven to 400°F. Place the potatoes directly on the oven rack or on a baking sheet. Bake for 50–60 minutes, depending on size, until the skins are crisp and the insides feel tender when pierced with a knife.
Split & Fluff. Remove from the oven and let cool slightly. Slice open lengthwise, then gently fluff the inside with a fork.
Add Toppings & Serve. Top with butter, shredded cheese, sour cream, green onions, or any of your favorite jacket potato toppings. Serve hot.