There isn't a way to search for that, but if you know their username and they have a SparkPage, you can go to their SparkPage, click on the More tab and select Favorites. Their cookbook(s) and shared recipes will be listed on there.
Hope that helps!
9/14/12 2:32 P
I used to be able to view all of a member's recipes in their cookbook but now I can't or I just forgot how to do it. Is there a way to search for a member's cookbook?