Found this in Food and Wine Magazine and sounds just enough different to give a try. To make ahead of time, press a piece of plastic wrap directly onto the surface of the guacamole and refrigerate overnight.
Found this recipe in a William Sonoma catalog and as DH loves peppers decided to give it a try. I did buy a special pan (see photo) to make it and the smoky flavor of the grill gave a wonderful fire-roasted flavor. Make sure you wear gloves when handling the raw jalapenos. The little effort involved with making this was so worth it. I'm sure you could also do these in a regular pan in the oven - but we loved that grill flavor. Be sure and get all those little seeds out or they can be really hot.