How to keep cookies fresh
To make cookies chewable again after becoming stale, just add bread.
Place a slice of fresh bread in with your cookies a day or two after you've baked them, or whenever you find their texture has deteriorated. The moisture from the fresh bread will migrate to your cookies (through cookie osmosis, see diagram above), rendering them soft and chewable again.
Link & Image: Megnut via Lifehacker
Tags: Cookie | Bread | Cookie Osmosis