Prepare the bread: Preheat your oven to 350°F (175°C). Grease a baking dish and spread the cubed bread evenly across the bottom.

Mix the wet ingredients: In a large mixing bowl, whisk together the sweetened condensed milk, hot water, brown sugar, eggs, melted butter, vanilla extract, and ground cinnamon until well combined.

Pour the mixture over the bread: Slowly pour the milk mixture over the bread cubes, making sure all the bread is soaked.

Let it rest: Allow the mixture to sit for about 10-15 minutes to ensure the bread fully absorbs the liquid.

Bake the pudding: Place the baking dish in the preheated oven and bake for 35-40 minutes, or until the top is golden brown and a knife inserted into the center comes out clean.

Serve: Let the bread pudding cool slightly before serving. It can be enjoyed warm, or you can chill it in the refrigerator for a cool treat. Serve it as is or with a drizzle of caramel or a dollop of whipped cream.