Uncover, arrange chicken on top, then cover again with foil. Continue to bake until rice is cooked through, about 10 more minutes. Turn on broiler. Top casserole with cheese. Broil, watching ...
Heat the oil in a large flameproof casserole ... around the chicken, grate in the lemon zest, add the garlic and dried tarragon (or thyme) and give a quick stir into the oil as best you can.