Currently there is a report to show Course Recommendations by Student. We would love to see another report for Course Recommendations by Department.
In the meantime, if any school has a similar need for this information, you can email me at firstname.lastname@example.org and I can share screenshots of the List I built to gather this information for export to excel. : )
The Request and Recommendations list allows you to filter on student or department to get a list by either.