Pre-heat oven to 400°. Cover a baking sheet with foil and spray with non-stick cooking spray. Set aside.
Wash potatoes and then cut the ends of the potatoes off and discard. Next cut the rest of the potatoes into approximately 1/2 inch slices.
Brush both sides and edges of the potatoes with butter and sprinkle with salt. Place on the foil covered pan and bake for 30 minutes, or until fork tender. Turn potatoes onto the opposite side after about half way, to brown the other side.
When potatoes are done, top with cheese, bacon and green onions. Continue baking for 3-5 minutes, or until the cheese in nice and bubbly.
Top with a little sour cream and green onions if desired. Enjoy!