Preheat the oven to 350° F.
Use a fork and poke several holes into each potato. Spray with cooking spray, then sprinkle with pepper and salt. Wrap each potato in foil.
Place potatoes on a baking sheet and bake for 45 minutes.
Remove potatoes from the oven and let cool for a few minutes. Unwrap each potato and cut it in half lengthwise.
Preheat the broiler to high heat. Spread butter or olive oil over the potatoes, then sprinkle with seasoning salt. Place under the broiler for 5 minutes or until golden brown on top (watch carefully, so they don’t burn).
Remove from the oven and top with cheese, sour cream, butter, and green onions. Serve warm.