I would suggest twice baked potatoes.
First boil unpeeled potatoes and remove from water to let the peels harden up a bit. Cut each potato in half and scoop out the insides leaving a small amount of pulp attached to the skin. Mix potato guts with milk, sour cream, butter, shredded cheddar cheese, salt, pepper and heap back onto the potato skins. Oil the bottom of a baking sheet and place potatoes back on the sheet and top with a small amount of shredded cheese. Place in a preheated oven and bake for 30 minutes at 350. These are wonderful served at room temperature as well as still hot.