Slice your bread into 1 inch thick slices.
Prepare a 13x9 inch pan with cooking spray and set aside.
Arrange slices in 2 rows, overlapping the slices. We cut slices in half to force the slices to overlap.
In a large bowl, combine the eggs, cream, milk, sugar, vanilla, cinnamon, nutmeg and salt.
Whisk until incorporated.
Pour egg mixture over the bread slices as evenly as possible. Spoon some of the mixture in between the slices and adjust slices so all are coated with egg mixture as best you can.
Cover with foil and refrigerate overnight.