Mushroom advice

So last night I made some stuffed mushrooms, and the stuffing was pretty good, but the mushrooms themselves came out a little weird. (The stuffing was kalamata olives, sun-dried tomatoes, rosemary, and garlic pulsed in the food processor, with goat cheese crumblies on the top.) They were kind of leathery on the outside. Does anybody have any advice on how to make stuffed mushrooms come out with a better texture than that? I just oiled the pan and plunked the mushrooms down on it.

Anyway there's leftover filling to stick in one of the gajillion pitas with the rest of the goat cheese for somebody's lunch, so that's a thing. The grocery curse is looking particularly bad this week: how can we need groceries on Tuesday when markgritter just bought all the food in the world on Saturday? Howwww? Oh, Great-Grandma, the curse you passed to me! If only there was a way to turn pitas into orange juice--forget this lead/gold stuff.