I'm making a sit-down dinner for 10 people and would love some recommendations for a make-ahead green vegetable side dish. The rest of the dinner menu consists of the wonderful baked eggplant parm dish from this site, a short rib ragu served over polenta and likely a grilled Caesar salad to start. I've thought of roasted green beans with garlic and olive oil, but I'd be happy to do something a little more involved. Does anyone have any suggestions? Thanks!