My family is invited to a potluck Friday night. The hosts are grilling (beef) and other guests are providing green salad with garlic-citrus vinaigrette and a dessert (unknown type.) All attendees are fairly open-minded "foodies," so I'd like to bring something nice, but there will be kids there, so it can't be TOO unapproachable. I was thinking about pasta twirls with pesto, but that's just so...meh. I was also thinking, possibly, about twice-baked potatoes? Anybody have any ideas for a fun starch or side dish that would go with this meal that would have a little more "oomph" and will travel well to the host's home (won't need extra re-heating, etc.)? Thanks, Serious Eaters!