01 -
Heat your oven to 400 degrees.
02 -
Rub each potato with olive oil and sprinkle with the kosher salt. Place them on a baking sheet and bake for 45 to 60 minutes, flipping them over halfway through, until they're tender when you poke them with a fork. Take them out and let them cool for about 15 minutes.
03 -
Turn your oven down to 350 degrees. Lightly grease a 9-inch square or 9x13 inch baking dish and set it aside.
04 -
Once the potatoes are cool enough to handle, cut them into bite-sized chunks and put them in a large bowl. Don't worry if some pieces fall apart a bit - that's totally fine.
05 -
Stir the mayonnaise and sour cream into the potatoes until everything is well coated.
06 -
Fold in the cheese, bacon, and green onions. Season with salt and pepper to your taste.
07 -
Scoop the potato mixture into your prepared baking dish and spread it out evenly. Sprinkle the topping cheese and bacon over the top.
08 -
Cover the dish with foil and bake for 30 minutes. Pull off the foil for the last 10 minutes so the top can get nice and golden.
09 -
Take it out of the oven, sprinkle the sliced green onions on top, and serve hot.