One of the easiest ways to accomplish this is to roast them. You can do a whole bunch at once so it's a better use of your time. Plus, they taste scrumptious!
The best vegetables to roast are, well...any veggies! Broccoli, cauliflower, squash, Brussels sprouts; they're all so yummy roasted. Each time you make these, change up the veggies and spices for a totally new dish.