A lot of people don't know what to do with these babies, so I'll tell you....first, you turn them over and pop off the stem. Then, use a tablespoon to scrape out the black stuff that is underneath. When the black stuff is all scraped out, it will look like the picture on the right. Then, I chop them up and throw them in a pan, with a little water on the bottom (so as the pan gets hot, the mushrooms don't burn). I want to cook them, not burn them.
I leave them in the pan at medium heat for about 10 minutes, stirring occasionally. If there is any liquid left over, I drain that out. Then I throw on about a tablespoon of teriyaki baste and glaze. This is important....use the glaze, not just teryaki sauce. The glaze will coat the mushrooms and stick to them.