I am attempting to make Disney land/world turkey legsThe recipe says quot;roast turkey legs in oven at 250deg, turning several times for 3-4 hrs until doneOnce done increase the temperature to 375deg and cook for 15 mins or until skin is crisp and brownquot;I am cooking them in a glass casserole dishShould I cover the turkey legs or leave them uncovered and should I add any liquid to the bottom of the dish?