Preheat the oven to 400˚ F. Line a baking sheet with foil.
Slice off the tops from the carrots, peel them, and slice it half lengthwise.
Combine the remaining ingredients and warm enough to melt the butter. Place the carrots on the foil and form and pouch around them. Pour the the orange juice mixture over them and lightly close the foil around the carrots.
Roast for 15 minutes. Undo the foil, spread out the carrots, face down, and roast an additional 10 minutes. Serve warm.