Photo by James Ransom Serves 4 Test Kitchen-Approved Ingredients 1 large or 2 small fennel bulbs (about 1 pound untrimmed) 1 medium red onion 1 small navel orange, scrubbed 2 tablespoons extra-virgin olive oil, plus more for drizzling Kosher salt and freshly ground pepper Directions Position a rack in the center of the oven and