In a small saucepan melt butter and add brown sugar and corn syrup, stirring over moderate heat until smooth and pour into a 6 x 9 casserole dish (this is my go-to size whenever I half something that is supposed to be in a 9 x 13).

Lay the slices of bread in the dish.

In a bowl whisk together eggs, half-and-half, vanilla, orange juice, and salt until smooth and pour evenly over the bread slices.

Chill bread mixture, covered, at least 8 hours and up to 1 day.

In the morning, preheat oven to 350° F. and set the dish out to warm up slightly while the oven heats.

Bake uncovered until puffed and edges are golden, about 40 minutes.

Serve immediately.