Wash and scrub potatoes.
Cut potatoes in half lengthways.
Place in a pot of boiling water.
Cook until potatoes are completely soft (about 40 minutes).
Strain and allow the potatoes to cool.
Set oven to broil OR preheat oven at 375 degrees F.
Scoop the center of the potato out leaving enough potato and skin to keep its shape.
Place the scooped-out potato in a large mixing bowl and the skin on a baking tray.
Brush the skin/ potato cups with butter.
Add grated cheese to the skins (optional).
To the mixing bowl, add half the amount of cheese plus salt, pepper, and cilantro).
Place the potato stuffing into the potato skins.
Top with cheese.
Broil or bake until the cheese has developed a golden crust (10 minutes).
Serve hot as a wonderful, tasty side dish.