Soft and Chewy S'more Cookies

butter, softened½ cup white sugar½ packed brown sugar1 egg1 teaspoon vanilla extract1 ¼ cups all-purpose flour1 cup graham cracker crumbs¼ teaspoon salt½ teaspoon baking soda1 ½ cups semi-sweet chocolate chips2 Hershey bars, broken1 cup mini marshmallows