Greggs' Festive Bake will be available in all stores nationwide from Thursday, November 7.
Showcasing some of Greggs' Christmassy treats is Nigella Lawson, who said on her Instagram video: "I love Christmas; it's my favourite time of year."
Nigella praises the "aromatic" gingerbread lattes that are soon to be in Greggs, and "gorgeous Christmas lunch baguettes".
Hot beverages soon to be available in Greggs include the Gingerbread Flat White, Iced Gingerbread Latte, Gingerbread Latte, Mint Hot Chocolate and Mint Mocha.
Christmassy food items include the Festive Flatbread, Christmas Lunch Baguette and the Festive Bake.
Back by popular demand is the Vegan Festive Bake made from puff pastry, Quorn, sage and onion stuffing balls, as well as vegan bacon, cranberry and red onion sauce.
"You demanded it back – and we heard you," Greggs stated. "The Vegan Festive Bake returning to our shelves with a new and improved recipe."
What's more, there will be a second Greggs menu launch in later November, which will feature a range of tasty sweet treats.
"The Greggs Christmas menu is back," Nigella said with a smile on her Instagram video.
Christmassy menu
Mint Mocha
Espresso, steamed milk, hot chocolate, mint-flavoured syrup, sweetener, whipped cream and chocolate sprinkles.
Mint Hot Chocolate
Hot chocolate, mint-flavoured syrup, cream topping and a sprinkle of chocolate.
Festive Flatbread
Sage and onion chicken mayo, bacon, cranberry and red onion relish.
Christmas Lunch Baguette
Chicken breast, sage and onion stuffing, onion gravy, bacon, cheese, cranberry and onion relish.
Festive Bake
Crumb-topped pastry, chicken, sage, onion stuffing, bacon, sage and cranberry sauce.
Thousands of people have already watched the Greggs Christmas ad featuring Nigella – and people are loving it!
One fan posted: "I love that this is totally on brand for Nigella… it’s why she was the one who taught me how to cook! I appreciated that she wasn’t snobby and enjoyed all food."
Another quipped: "Move over Mariah [Carey], Nigella is now the queen of Christmas."
Somebody else noted: "Greggs x Nigella. The collaboration we didn't know we all needed. Instantly iconic."