Sources tell TMZ the couple shot a commercial for McDonald's right around Christmas time ... which was filmed with a small crew -- even though we're told the scale of the ad is going to be huge, and it's expected to make a splash on game day.
Cardi and Offset shot it solo -- so, no kids in this -- and our sources tell us it's Valentine's Day themed. Unclear what exactly is going to be depicted, but we imagine it'll be lovey-dovey ... which CB and Offset already are on their own.
Obviously, this is going to air on Feb. 12 -- the day of SB LVII -- just a couple days before V-Day.
As for why these two decided to shoot during the Christmas holiday ... we're told everyone felt it'd be the best day to get some work done, seeing how everyone (celebs included) usually take it easy. It also gave them a good window to get some work done without distractions.
This is Cardi's second go-around when it comes to Super Bowl ads -- she famously did one for Pepsi a few years ago ... and now, she's been tapped by another giant corporation.
The Super Bowl also holds a special place in Offset and Cardi's hearts, generally, since it's where they went public as a pair. Remember, we first saw Offset with Cardi during the SB in Houston in 2017 ... an early sign that they were a thing.