I have been trying to decide how to serve this vege on Thanksgiving Day. I will have a big 20 lb'er in the oven...so maybe roasting is not the way to go. Or, can they be roasted *ahead of time*, early in the day...and then quickly reheated somehow? Which method do you prefer? Preping early...store in a zip loc in the fridge, and saute just before serving? What do you all think?