"Brûléed" Eggnog Croissant French Toast

1. Butter a 9x13 inch-baking dish.2. In a bowl, mix the brown sugar, maple syrup, and butter. Spread the mixture in the bottom of the prepared baking dish.3. In a large bowl, whisk together the eggs, eggnog/ milk, Grand Marnier, vanilla, cinnamon, nutmeg, and salt. Submerge each croissant into the egg mixture, allowing the croissant to sit for a minute and soak up the eggs. Arrange in the prepared baking dish. Pour the remaining egg mixture over the croissants. 4. Cover and place in the fridge for 1 hour or overnight. When ready to bake, preheat the oven to 375° F. Sprinkle the sugar evenly over the French toast. Bake for 40 minutes or until the French toast is golden and crisp. If the top begins to brown too quickly, loosely cover with foil5. Serve the French toast warm, topped with whipped cream (if desired), and fruit preserves. Enjoy!