Outback Steakhouse: Free Bloomin’ Onion With Any Purchase! This post may contain affiliate links. View my disclosure policy for details.July 21, 2014 by Lindsay Frank 3 Comments Today only Outback Steakhouse is offering a free Bloomin’ Onion with any purchase. Just say “Bloomin’ Monday” to your server. Grab a drink to keep it cheap if you’re not planning on a whole meal. Enjoy!