Place the butternut squash slices, shallots and rosemary on a lined baking tray. Drizzle with oil, season with salt and freshly ground black pepper and roast ... Crumble the feta cheese on top ...

Roast in oven until golden-brown ... Top each flatbread with roasted butternut squash, caramelized onions and feta cheese. Sprinkle with black pepper. Bake at 375 degrees for 10 minutes.