Preheat oven to 300 F.
Assemble the bread pieces on a parchment-lined baking sheet and bake for 25 minutes. Allow to cool completely.
Meanwhile, soak the raisins in enough warm water to cover completely .Rest for 10 minutes. Strain.
In a large bowl, whisk together the sugar, the eggs, vanilla extract, nutmeg and melted butter.
In a medium saucepan, heat the cream and milk. Bring to a boil.
Slowly pour the cream mixture over the egg mixture while whisking continually.
Prepare a 9 by 12-inch baking dish with butter.
Add the bread. Stir in the raisins.
Pour the cream mixture on top. Let set for 30 minutes.
Preheat oven to 350 F. Bake for 45 -50 minutes until golden.
Cool. Then enjoy!