Yesterday December 4, was National Cookie Day.

Even celebrities love a good cookie!

Taylor Swift is an avid baker.

Fans love her recipe for chai spiced eggnog cookies.

She rips open a packet of chai tea and adds it straight to the batter!

Veteran baker Martha Stewart has published over 100 cookie recipes.

She even released a recipe for bacon and potato chip chocolate chip cookies!

Mariah Carey also has her own online cookie business.

She added three new holiday flavors for the 2021 holiday season.