Moe’s FREE Queso Day on 9/20! This post contains affiliate links which means that we may be compensated if you click a link and make a purchase.. September 11, 2018 by Karen-Kupon Girl Leave a Comment Moe’s FREE Queso Day on 9/20! Moe’s annual Free Queso Day is happening soon! Grab your crew and head down to your local Moe’s Southwest Grill to get a free cup of queso! No purchase necessary. Valid 9/20/18 all day long. Sign up for the latest Deals and get A Grocery Budget List + Pantry Checklist Printable!"We Respect Your Email Privacy"