Why spending fortune of granola bars or granola mix if you can make one for fraction of a price? Hardest part of baking granola is knowing when the granola is done. Using a low oven temperature helps dry out the granola without over-baking it, but keep in mind that the granola won’t be dry right out of the oven, it will dry as it cools, so take it out of the oven when it looks lightly toasted and smells like cooked honey. We’re going for a toasty smell here.