In a bowl, add eggs and egg nog. Whisk until eggs are incorporated. Add cinnamon, nutmeg, vanilla and sugar. Whisk again.Place a griddle pan over medium heat. Add 1 tablespoon of butter to the pan until melted. dip each piece of bread into the egg mixture. Be sure to completely coat each piece. Add bread to the pan 2-3 pieces at a time. Cook toast on each side, then remove from pan. Add another tablespoon of butter and repeat process until all of the french toast is cooked. Serve with candied walnuts, whipped cream and syrup.