It's easy to whip up a batch of focaccia on account of this straightforward, six-ingredient recipe made with ingredients you likely have on hand. The dough — made with all-purpose flour, yeast and salt — must be kneaded for a few minutes and allowed to rest. It's then rolled out and placed on a baking sheet, brushed with a mixture of water and olive oil and liberally showered with Parmesan cheese. You could sprinkled it with chopped fresh or dried herbs, if desired.