Preheat the oven to 400 degrees. Peel and chop the carrots into strips about 1/2 inch thick and set aside.
In a small saucepan, add the apple cider, cinnamon, rosemary, and maple syrup. Bring to a boil over medium heat and allow to simmer until reduced for 6-7 minutes
Toss the cut carrots with the olive oil and salt, and then lay them out evenly over a baking pan. Pour the apple cider reduction over the carrots and toss again,
Roast in the oven for 25-30 minutes, using a spatula to turn the carrots after 15 minutes. Serve hot and enjoy!