Preheat the oven to 350°F/180°C. Spray a loaf pan with baking spray.
Put the pieces of bread in a large mixing bowl.
Melt the butter and pour over the bread, stirring until well combined.
In a separate bowl, mix the crushed pineapple, egg, salt, cinnamon and sugar together.
Pour over the bread, stirring until well combined.
Stir in the optional ingredients.
The bread should be wet, but not sopping. Add more juice or bread as needed.
Transfer to the loaf pan and bake until set. Start checking at 20 minutes.