Will freezing brown sugar keep it soft?

Freezing brown sugar can help maintain its moisture and prevent it from hardening, but it's not the most common method for storage. Instead, keeping it in an airtight container at room temperature is usually sufficient to keep it soft. If it does harden, you can revive it by adding a slice of bread or a few marshmallows to the container. If you choose to freeze it, make sure it's well-sealed to avoid moisture loss.