My Name is Kim Sam Soon (2005)

Kim Sam Soon is a baker who has a talent in making pastries and cakes. On Christmas Eve, she caught her boyfriend, Min Hyun Woo, cheating on her and breaks up. On that same night, she accidentally went into the men's restroom and met Hyun Jin Hun. By sheer coincidence, Jin Hun needs a baker for his restaurant Bon Appetit and Sam Soon is unemployed. Sam Soon is hired as the restaurant's chief baker and the two fights like cat and dog.