Place the carrots in a slow cooker. In a small bowl, whisk together the butter, brown sugar, salt, cinnamon and nutmeg.
Pour the brown sugar mixture over the carrots and toss to coat.
Cook on HIGH for 3 hours or until carrots are tender. If you'd like to thicken the glaze, remove the cover and cook on HIGH for an additional 15 minutes. Sprinkle with parsley and serve.