Ya it can be done. For that we need to customize the plugin little bit. As you are not using the Pro version here and so we don’t have Copy to wordpress feature. This changes you made this time will get flush after the plugin is updated to new version.
However, here is the file you need to modify.
Path : wp-content/plugins/wp-masonry-layout/themes/default/layout.php
In line number 9, change the code to < ?php the_date(); ?>