Preheat oven to 350°F
Grease a baking dish with butter
Break the bread into small pieces in the baking dish, drizzle the melted butter over it
Sprinkle fruit over and around the bread pieces
In a medium mixing bowl, whisk together eggs, rum, milk, sugar, cinnamon, and vanilla
Pour over bread and lightly press the bread pieces down to ensure they've all soaked up the egg mixture
Bake in the preheated oven for 45 minutes, or until the top springs back when lightly tapped