"Blueberries as big as the end of your thumb," Robert Frost's poem, "Blueberries," begins. "Real sky-blue, and heavy, and ready to drum." We here at Food52, though, are accepting of all blueberries: small, medium, and thumb tip-sized. Size doesn't matter when they're all covered in crumble, put into pancakes, or swirled inside cinnamon rolls. Here are 16 recipes that prove it's easy being blue—and a blueberry.