Preheat your oven to 400°F (200°C).
Wash the russet potatoes under cold running water and scrub them thoroughly. Pat dry with a clean towel.
Pierce each potato several times with a fork to allow steam to escape.
Rub each potato with a little olive oil and sprinkle them with salt. Wrap each potato in aluminum foil and place them on a baking sheet.
Bake in the preheated oven for about 45-60 minutes, or until the potatoes are tender when pierced with a fork.
While the potatoes are baking, combine the pulled pork with the barbecue sauce in a large mixing bowl. Mix until the pork is coated well with the sauce.
Once the potatoes are done, remove them from the oven. Carefully unwrap the foil and cut each potato lengthwise down the center.
Gently fluff the insides of each potato with a fork and season with salt and pepper to taste.
Top each potato with a generous scoop of the barbecue pulled pork, followed by shredded cheddar cheese, sour cream, and chopped green onions.
Serve hot and enjoy your Mississippi Mud Baked Potatoes!