Now, back to the question at hand: do you have to refrigerate bread pudding? The short answer is, it depends on how quickly you plan to devour it. If you're going to eat it within a day or two, you can probably get away with leaving it at room temperature, but if you want to keep it fresh for longer, it's best to chill it in the fridge.
Think of bread pudding like a delicate flower, it needs to be handled with care to prevent it from wilting. When you leave it at room temperature for too long, it can become a breeding ground for bacteria, which can lead to some pretty nasty consequences. So, it's always better to err on the side of caution and pop it in the fridge to keep it fresh and safe to eat.
Refrigerating Bread Pudding: Tips For Storage And Freshness | CyCookery
But what about freezing it? Can you do that? The answer is, absolutely! Freezing is a great way to preserve bread pudding for longer periods of time. Just make sure to wrap it tightly in plastic wrap or aluminum foil and store it in a freezer-safe container. When you're ready to eat it, simply thaw it overnight in the fridge or reheat it in the microwave.