Great American Cookies: FREE Birthday Cake Cookie on Tax Day April 15April 8, 2013 By Kelli This post may contain affiliate links or sponsored content, read our Disclosure Policy. Facebook Twitter Google+ Pinterest LinkedInGreat American Cookies: FREE Birthday Cake Cookie on Tax Day April 15On tax day, April 15, head to a participating Great American Cookies location to score a FREE birthday cake cookie! Yum! Limit one per person. To find a Great American Cookies location near you, go here.