Cooking Turkey Legs and boneless Turkey breast in an electric roaster
Use a probe thermometer.  Cook the turkey breast to 160F.  Roast the leg/thigh until the temp reaches 180F.  Make sure the thermometer is not touching bone. The legs are more forgiving and won't dry out as readily. So, you might want to start the legs 40 minutes or so before the breast so that they are done around the same time.