How do you keep melted marshmallows from getting hard?

There are a few ways to keep marshmallows from hardening after they've been melted:

* Add corn syrup or honey: Both corn syrup and honey are humectants, which means they attract and retain moisture. Adding a small amount of either of these ingredients to your melted marshmallows will help keep them soft and chewy.

* Store them in an airtight container: Once your marshmallows have been melted, store them in an airtight container at room temperature. This will help prevent them from drying out and hardening.

* Reheat them if they do harden: If your marshmallows do happen to harden, you can reheat them to soften them up again. Simply place the hardened marshmallows in a microwave-safe bowl and heat them on high for 10-15 seconds, or until they're soft and gooey again.