Late yesterday afternoon, the porcinis that I ordered that weren't going to come because they were out were delivered anyway, much to my surprise, so I cut one up, sauteed it, and built the polenta that was already on my menu from there. The only other additions were a pinch of basil and a handful of grated parmesan.
The result was quite tasty, but unfortunately the dish was terribly unattractive as the greenish-colored gills dissolved into the porridge and turned it a rather unappetizing color compared with polenta's usual brilliance. For that reason alone, I would not do this again.
But at least I tried.