McDonald's -- Grand Big Mac Dutch Grand Big Mac commercial. The Grand Big Mac is a bigger version of the Big Mac. Available for a limited time in some countries. In the United Kingdom, it was avaliable alongside the Mac Jr. from February to March 2018. Retrieved from "https://mcdonalds.fandom.com/wiki/Grand_Big_Mac?oldid=11652" Categories: Menu items Sandwiches Beef Burgers Meals Food Hamburgers Big Mac Community content is available under CC-BY-SA unless otherwise noted.