Preheat oven to 425º. On a baking sheet, prick sweet potatoes / potatoes all over with a fork.
Bake until tender, 45 to 50 minutes.
Let cool, then split the tops open with a knife and top with a pat of butter.

(Optional) Prepare gravy based beans (black beans, etc) as side dish.

When sweet potatoes are almost done, take a pan with lots of butter and some oil. Toss in the mushrooms and chilli peppers. Add seasonings as desired. (salt, pepper, paprika, oregano, etc.)

Add the mushrooms in the slits of the potatoes. Top it with grated cheese and put it back into the oven for the cheese to melt.

Serve with beans.