Preheat oven to 350°.
Break bread into small pieces into a 9 x 13 pan until full.
Drizzle melted butter over bread pieces.
In a mixing bowl, combine milk, eggs, sugar, cinnamon, and vanilla.
Beat until well combined.
Pour over bread and press bread pieces down into mixture to make sure all is coated.
Bake in a preheated oven for 55 minutes, or until top springs back when lightly tapped.
Eat it by itself or with ice cream, caramel sauce, chocolate sauce, etc...