The carrots can be served in hollowed out orange shells for a nice presentation. The recipe also says they may be prepared ahead and reheated although I have never done that. Prep time does not include the time to clean and cut the carrots.
Combine carrots, water to cover, and salt in pan. Cover and cook over medium heat 25 minutes. Drain and set aside.
Melt butter in a large skillet over medium heat. Add sugar and marmalade and simmer about 10 minutes or until sugar is melted. Stir in carrots and 1/2 cup Grand Marnier. Simmer, uncovered about 30 minutes or until carrots are shiny and candied. Add remaining Grand Marnier.
Sprinkle with nutmeg and serve in orange shells, if desired.