Configure cron job that is executing every 15 minutes on Hangfire

Currently I am using this approach:

RecurringJob.AddOrUpdate(() => Console.Write("Recurring"), "*/15 * * * *");

And is working like a charm.

Reference to my question in Hangfire forums: http://discuss.hangfire.io/t/how-to-create-cron-job-that-is-executing-every-15-minutes/533