DP and I are spending Christmas with my parents. We've offered to do the roast veg - so carrots and parsnips. We'd do more but dad greatly enjoys cooking and won't let us. I'm wondering how soon I can do it. Tomorrow afternoon we're going to my parents so it has to be before then. I'm wondering if I cook them tonight, will they still be okay on Thursday? The ovens on for dinner so I thought it'd be good to make use of it instead of putting it on again tomorrow. Probably a bad idea though isn't it?