Creating Bananas Foster Bread Pudding is straightforward if you follow these simple steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C) and grease a 9×13-inch baking dish.
2. Prepare the Bread: Tear the day-old bread into bite-sized pieces and place them in the prepared baking dish.
3. Mix Bananas: In a bowl, gently toss the sliced bananas with a tablespoon of granulated sugar. Set aside.
4. Whisk Wet Ingredients: In another bowl, whisk together the eggs, milk, heavy cream, remaining granulated sugar, vanilla extract, cinnamon, and salt until well combined.
5. Combine: Pour the egg mixture over the bread pieces, ensuring all the bread is soaked. Gently stir in the bananas.
6. Make the Topping: In a saucepan over medium heat, melt the butter. Add brown sugar and dark rum (if using) and stir until combined and bubbly. Remove from heat.
7. Add Topping: Pour the butter mixture evenly over the bread pudding. This will create a delicious caramel layer at the bottom.
8. Bake: Place the baking dish in the preheated oven. Bake for 40-45 minutes, or until the top is golden brown and a toothpick inserted in the center comes out clean.
9. Cool: Remove from the oven and let it cool for about 15-20 minutes before serving. This will allow the flavors to meld together beautifully.
10. Serve: Serve warm, optionally topped with whipped cream or a scoop of vanilla ice cream for an extra indulgent treat.