High nutritional value appetizer
Preheat oven to 375 F.
Wrap potatoes in foil and bake until fork tender for about an hour.
Split potatoes in half and spoon out the filling into a medium sized bowl leaving enough in the shell so that the skin does not break when handling
Add mayo, 1 cup cheese, green onion, green pepper and tuna to all the potatoes
Re-stuff potatoes with mixture to a slight mound. Sprinkle with remaining cheese
Place in a baking dish and bake for 20 minutes.