Spray a 13x9" baking dish or large rimmed baking sheet with non-stick spray.
In a small pot, combine brown sugar, corn syrup and butter. Cook over medium heat until mixture is bubbly, 4-5 minutes, stirring constantly. Stir in cream and pour into prepared baking dish.
Arrange bread slices on top of caramel in dish.
In a bowl, combine milk, flour, vanilla, salt and eggs with a whisk. Pour over bread. Cover and refrigerate 4 hours or overnight.
Preheat oven to 350 degrees F.
Combine sugar and cinnamon and sprinkle evenly over bread. Bake for 45-50 minutes or until golden. Let stand a few minutes before serving.