My bike club season opener is on Saturday, and we're riding, then having a potluck. I have to bring a side dish or salad. Anybody have a great idea for me? These folks are great cooks, so I generally feel inadequate no matter what I bring. I'd like to bring something simple and healthy (preferably vegetarian) that will keep well refrigerated from when I make it (Friday night) to Saturday around noon. Also I will be transporting it in a plastic container strapped to my bike rack, so souffle wouldn't work

Thanks, guys.

-Amy