Sausage, Apple and Cranberry Stuffing

INGREDIENTS: 1 1, 2 cups cubed whole wheat bread 3 3, 4 cups cubed white bread 1 pound ground turkey sausage 1 cup chopped onion 3, 4 cup chopped celery 2 1, 2 teaspoons dried sage 1 1, 2 teaspoons dried rosemary 1, 2 teaspoon dried thyme 1 Golden Delicious apple, cored and chopped 3, 4 cup dried cranberries 1, 3 cup minced fresh parsley 1 cooked turkey liver, finely chopped 3, 4 cup turkey stock 4 tablespoons unsalted butter, melted