Noting is more disappointing than stale granola. The once wonderful crunch has turned into something that’s soft, chewy, and dull. But that’s no reason to toss it! There's a way to revive stale granola so that it regains that crisp bite. All it takes is spreading the granola in a single layer on a rimmed baking sheet and heating it in a 400 degree oven for five minutes — essentially re-baking it. You’ll want to be sure to avoid piling up the granola, so if you’ve got a lot, it’s best to grab a second baking sheet. Once the granola cools completely, it’ll have that crispy crunch again. Whether it’s homemade or store-bought, properly storing granola will help extend the shelf life and maintain crunchiness. Store granola in an airtight container or tightly sealed zip-top bag in a dry, dark place away from heat. The pantry or a kitchen cabinet makes a good choice. Most store-bought options come with a resealable top, but if not, it’s helpful to transfer it to an airtight jar or container.