In a large mixing bowl, whisk eggs until well beaten. Add milk, vanilla, syrup and cinnamon and mix. Pour egg mixture over the bread cubes. Cover and refrigerate for at least an hour (may refrigerate overnight).
Remove from the refrigerator 30 minutes prior to baking. Cover and bake in a preheated 350-degree oven for 30 minutes. Uncover and continue baking for 25 minutes or until the center is firm and set, and the top is lightly browned.