My Lovely Sam Soon

Kim Sam Sun is a baker who has a talent for making pastries and cakes. On Christmas Eve, she catches her boyfriend, Min Hyeon U, cheating on her and breaks up. On that same night, she meets Hyun Jin Heon, the owner of a restaurant called Bon Appetit. By sheer coincidence, Jin Heon needs a baker for his restaurant, and Sam Sun is unemployed. Sam Sun is hired as the restaurant's chief baker, and the two fight like cats and dogs.
(Source: DramaWiki)
~~ Adapted from the novel "My Name Is Kim Sam Soon" (내 이름은 김삼순) by Ji Soo Hyun (지수현).