If you leave your brownies out overnight, they might become dry and stale, which is basically the worst thing that can happen to a brownie. And let's not forget about the critters that might come crawling - we're talking ants, cockroaches, and other unwanted guests that might just decide to crash the party. It's like leaving a trail of crumbs for them to follow!
But, on the other hand, if you store your brownies properly, they can last for up to 3 days at room temperature, or up to 5 days in the fridge. That's a lot of brownie-eating time, if you ask me! And if you want to get really creative, you can even freeze them for up to 2 months - just think of all the happy memories you'll make with your frozen brownies.
