Preheat oven to 375°F. Spray a 11” x 17” casserole dish with non stick cooking spray; set aside. In large bowl combine, sweet potatoes, apples, cranberries, butter, cranberry juice, and Sweet Potato Spice Pack, mix well. Pour sweet potato, cranberry mixture into prepared pan. Bake for 35 to 45 minutes, stirring occasionally or until sweet potatoes are softened when pricked with a fork. Remove from oven, stir in pecans. Sprinkle top of sweet potatoes with Sweet Potato Marshmallow Pack. Return to oven for 5 minutes or until marshmallows are softened and light brown. Let cool for 10 minutes before serving. Refrigerate leftovers.