Rustic, yet simple, this appetizer is fantastically full of fall-like savory flavor. Fall Flatbread will be a fan-favorite for sure. Yellow and red onions, fanciful fennel, and fragrant thyme leaves reach their flavor bests atop a layer of tangy Dijon mustard and melty provolone cheese. And when it is all unforgettably elevated with a fumbling of flamboyant fontina cheese... well, it is just flat-out fabulous! Fix Fall Flatbread for your family and friends and they will become fanatical followers for sure. It's a fittingly flavorful fall find!