One of my favorite and easiest side dishes to make quickly, are roasted carrots. I like to keep the carrots whole, so I just peel the thinnest layer off of them. Lay on a sheet pan, drizzle with olive oil, and a generous amount of salt. Roast in a 400 degree oven for 30 to 45 minutes, depending on how thick the carrot stalks are. Shake the pan mid process, so the carrots cook evenly.
The carrots will get a tad caramelized and be perfect alongside just about any else you are making for your meal.