1 c. brown sugar
1/2 c. (1 stick) butter
2 tbsp. light corn syrup
10 slices white bread, cut in half
6 eggs
1 1/2 c. milk
1 tsp. vanilla
1/4 tsp. salt (optional)

Combine sugar, butter, and corn syrup in a small saucepan; cook over medium heat until thickened, stirring constantly. Pour syrup mixture into a 9x13 inch baking pan. Arrange 10 bread halves on top of syrup mixture. Top with remaining bread halves. Combine milk, vanilla, eggs, and salt (if desired), stirring until blended. Pour egg mixture evenly over bread slices. Cover and chill 8 hours.