I found
this with a Google search. It's University of Oklahoma, Masterpieces of Russian Literature, independent study. "Enroll any time of the year. Advance at your own pace. Take exams when you feel ready." I don't really know anything about it, but from a quick glance at the web page it looks promising. $115 per credit hour, so this three-hour course should be $345. I don't know if there are any additional fees or anything about enrollment criteria.
Good luck!
-Gary-