Einstein B1G1 Panini on Facebook This post may contain affiliate links. See my disclosure policy for details.February 2, 2011 By Ann-Marie Leave a Comment If you're new here, you may want to subscribe to my email updates or my RSS feed. Thanks for visiting! Head to Einstein Bros. Bagels’ Facebook page right now (“Like” if you don’t already) and print a coupon for Buy One, Get One Free Bagel Thin Eggwhite Breakfast Panini while they last. Coupon good through 2/28/11.