01 -
2 large chicken breasts.
02 -
1 teaspoon seasoned salt.
03 -
1/2 teaspoon black pepper.
04 -
1 tablespoon butter, plus extra if needed.
05 -
1 medium onion, sliced 1/4-inch thick.
06 -
1/2 pound button mushrooms, sliced.
07 -
1/4 pound Monterey Jack cheese, shredded.
08 -
Salt to taste.