$mech->cookie_jar(HTTP::Cookies->new(
file =>"mechcookies.txt", 
autosave => 1));

##</code><code>##

my @args = (Authorization => "Basic " .MIME::Base64::encode('USER:PASS'));
$mech->get('https://www.BlahBlah.com/secure-bin/Blahclub/login_redirect.cgi', @args);
$mech->get('http://www.BlahBlah.com/ThingIWant')