This combination is an overnight sensation that is cooked in the morning.
Place bread sliced in a 9x13-inch pan. Whisk together eggs, milk, vanilla, 1/2 cup sugar and salt. Pour half of liquid mixture over bread.
Arrange apple slices over bread and pour in the remainder of egg/milk mixture. Mix the remaining sugar with cinnamon and nutmeg and sprinkle over the apple slices.
Cover and refrigerate overnight or at least 4 hours. Before baking, remove cover, dot with butter.
Bake at 350°F for approximately 60 minutes or until knife inserted in the middle comes out clean. Serve warm with Apple Cider Syrup.
For syrup, mix dry ingredients in a heavy saucepan. Add cider and lemon juice. Cook over medium heat, stirring until thickened.