Recipe Hero comes with a built-in review and rating system. It uses the same ‘comments’ system that WordPress itself uses, but optionally allows for star ratings too.
By default, it’s enabled and will look something like this:
The form to submit a review looks like this:
However, you do have the ability to disable the ratings feature, quite easily. Simply go to Recipe Hero > Settings and disable the setting for it:
You can quite easily disable reviews as a whole on a per-recipe basis, but I’d actually suggest using a plugin like Disable Comments to disable them completely for the Recipe post type.