The amount listed will serve about 3-4 people although my DH and DS could eat this dish by themselves lol! you can double this recipe if desired, white button mushrooms can be replace for the portabellos. This dish will have you clammering for more, and it tastes even better the following day, but I doubt if there will be any leftovers lol! Use as much portabello mushrooms or button mushooms and cheeses as desired for this recipe, I don't bother measuring. This can be served as a side dish or a main dish, it's a pretty filling dish especially if you use portabello mushrooms!