Prep Time 15 minutes mins
Cook Time 40 minutes mins
Total Time 55 minutes mins
Oil-free option: Sauté the onion with a little water or vegetable broth to keep from sticking. You can also drizzle the roasted vegetables with a little broth before putting them in the oven. Lining your baking sheets with silicone baking mats will help keep the veggies from sticking.