Arrange bread cubes evenly in a lightly greased 13- x 9-inch pan. Whisk together eggs, milk, sugar, butter, maple syrup and vanilla; pour over bread mixture, pressing bread cubes to absorb egg mixture. Sprinkle evenly with 1 teaspoon cinnamon. Cover and chill 8 hours. Remove from the refrigerator at let stand 20 minutes. Sprinkle with remaining cinnamon.
Bake, covered, at 350° for 30 minutes. Uncover and bake 25 to 30 more minutes or until lightly browned and set. Let stand 5 minutes before serving. Serve with maple syrup.