Lifestyle Food McDonald's Is Giving Out Free Food Every Day Until Christmas Eve, Thanks to Mariah Carey "You're welcome," Mariah Carey told McDonald's fans on Monday By Dave Quinn Dave Quinn Instagram Twitter Dave Quinn is an Editor for PEOPLE, working across a number of verticals including the Entertainment, Lifestyle and News teams. People Editorial Guidelines Published on December 13, 2021 04:12 PM Share Tweet Pin Email McDonald's customers owe a big thank you to Mariah Carey. On Monday, the Grammy-winning singer gave fans of the Golden Arches a real treat: free Big Macs. This is just the first free item offered on McDonald's Mariah Menu, which launched on Monday. It offers customers who spend $1 or more on the McDonald's app 12 days of Carey's favorite menu items for free — from the classic cheeseburger and Big Mac to soft-baked chocolate chip cookies and McDonald's signature baked apple pie. "My menu drops today!" Carey tweeted, alongside a photo of herself. "I left you 12 days of presents in the McDonald's app." To access each deal, customers can simply download the McDonald's app and visit the deals section to add to their order. The promotion runs from now until Christmas Eve. Mariah Carey Teams with McDonald's for a 12 Days of Christmas-Inspired 'Mariah Menu' McDonald's Holiday Pie Is Back to Help Sweeten Up the Season McDonald's first revealed the Mariah Menu back in November. "Some of my favorite memories with my kids are our family trips to McDonald's, and of course, each of us has our go-to order," Carey said in a press release at the time. "Bringing together some of our favorite food from McDonald's with my all-time favorite season is a holiday wish come true." Kicking things off on Monday, McDonald's official account tweeted, "If @MariahCarey retweets this everyone gets a free Big Mac." Carey quickly followed suit, retweeting the message along with the comment, "You're welcome." Mariah Carey/Twitter That unlocked the deal, which McDonald's says runs at participating restaurants. Customers can cash in the offer once a day. They'll get "two all-beef patties, special sauce, lettuce, cheese, pickles, onions on a sesame seed bun," as Carey sang in a TikTok video, covering the iconic Big Mac jingle. "Now sing that three times fast," she joked. McDonald's Launches a Line of Mariah Carey Merch to Celebrate Holiday Collab — and It's All Free Courtesy of McDonalds Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories. To celebrate the Mariah Menu, the fast food giant released a new commercial, which blends McDonald's and Mariah's worlds to the sound of everyone's favorite holiday anthem, "All I Want for Christmas is You." They've given their bags a new design, too, and even created a limited-edition line of Carey-themed merchandise which they're giving out to the first 10,000 fans who redeem the Mariah Menu deal on Dec. 15 and on Dec. 21. The Dec. 15 swag will be a stylish black knit beanie with Carey's signature embroidered on it in gold writing. And on Dec. 21, fans will get a black T-shirt featuring a throwback photo of Carey enjoying her go-to McDonald's order: a cheeseburger with extra pickles. "Just like so many of my fans, I have such amazing memories with McDonald's over the years," Carey said in a statement about the line. "I always get a sense of nostalgia when I see the Golden Arches, so creating throwback merch with one of my favorite photos from the 90s was really fun for me."