This post says what I intuitively thought might work for broccoli in the IP: http://icantbelieveimadethat.blogspot.ca/2016/01/how-to-steam-fresh-broccoli-in-instant.html ... and that is 0 minutes steam, quick release. Hope you added some stock and perhaps a touch of cream and/or cheese and at least have a nice pot of broccoli soup now, Anna.
oops .. I think I replied to a very old post by mistake. My bad. I thought I was on the last page.