In the "Unit Statistics" section on lds.org, one can easily see which endowed adults have a recommend and which don't. From what I can tell, this is not possible in MLS. Although the "Unit Statistics" section does show you the endowed adults, these are the only columns in the report:
- Record Number
- Endowment Status is "Endowed"
- Temple Recommend Expiration Date is in next "5 Years"
I guess this could actually be considered two feature requests related to the same thing.