On the day before preparation, roast the potatoes in the oven. Allow the potatoes to cool and store them in the refrigerator overnight.
On the day of preparation, remove the potatoes from the refrigerator and cut in half.
Scoop out the pulp of the potatoes into the bowl of a mixer, leaving a shell. Be careful not to scoop too close to the skin or the potato skins will tear.
To the potato pulp, add the broth, 1/2 cup cheddar cheese, butter, green onion, sour cream, salt and pepper.
Beat until smooth and creamy.
Spoon the potato mixture into the potato shells.
Top with the remaining cheese.
Bake at 350 degrees for about 20 minutes or until the cheese is melted.
Remove from the oven and sprinkle with smoked paprika as a garnish.