Preheat oven to 400 degrees F.
Prepare carrots by scrubbing clean or peeling, and trimming ends away. Cut into halves or quarters, lengthwise. Alternatively, cut into large pieces as they will reduce in size as they cook.
Place carrots in a large bowl, then drizzle with oil, maple syrup or honey if desired, salt, pepper. Mix to combine.
Lay in baking tray in one layer and roast for approx. 20 minutes until carrots are just tender. Check and flip after 10 minutes. Depending on the size, the cooking time can be adjusted to 30 minutes.