Preheat oven to 400 degrees.
Rub the outside of the potatoes with canola oil. Place the potatoes in a baking sheet and bake for 1 hour. Remove the potatoes from the oven & reduce the oven's heat to 300 degrees.
Combine the butter, sour cream, 3/4 of the bacon, milk, seasoned salt, & pepper in a large bowl.
While the potatoes are still warm, grip them with clean kitchen towel & slice in half lengthwise. Using a spoon, hollow out the potatoes. Repeat until all the potatoes have been hollowed out. Place the potato shells on a large baking sheet.
Add the potatoes to the bowl with the sour cream mixture & combine using a potato masher. Stir in half of the cheddar cheese & 3/4 of the green onions to the mixture.
Fill each potato with the mashed potato mixture, leaving a little room for the reserved cheddar cheese. Top with the shredded cheddar.
Bake for about 15 minutes, until the cheese is melted & the potatoes are hot. Sprinkle with the reserved bacon & green onions.