Preheat the oven to 300 degrees F (150 degrees C).

Whisk 1 ½ cups sugar and eggs together in a medium bowl. Whisk in milk, heavy cream, vanilla extract, and cinnamon until smooth.

Arrange bread cubes in a medium baking dish; top with golden raisins. Pour milk mixture over bread cubes; set aside until bread becomes saturated with mixture.

Bake in the preheated oven until lightly browned, about 45 minutes.

Meanwhile, heat remaining 1 ½ cups sugar, butter, and corn syrup in a medium saucepan over low heat until thoroughly combined. Off heat, whisk in whiskey. Serve warm over bread pudding.