Legendary Witch

Female-centric plots in both, with women at work and their sismances.
WWW working with search engines, Legendary Witch about Baking.

Both star Han Ji Hye.
Both ensemble family dramas.
HJH's characters in both are in very similar circumstances- unaccepted and looked down upon by her rich husband's family, recently separated from her husband (death/divorce) but still stuck in his working world. Her new romance also starts out on a similar bad foot (bickering/disliking dynamic).

- a group of ladies end in the same cell and take revenge on a company named "Shinhwa".
-They all have a same dreams that is to make bread.

Both are Food themed Family dramas,
and both are even written by the same great screenwriter.

Both have a theme of #FoundFamily too

Both main characters are a woman who is sent to jail for something she didn't do, though two very different scenarios because of the crime committed, they have to learn to cope with the aftermath and begin a new life whether it be love or friendship.

Both drama reminds me of each other because they have a family who live in the same house together but they are not blood related, and they also consider themselves as siblings and each siblings is connected with the other family as romantic or nemesis and each of them have their own stories..

Both of them has GIRL POWER!! Both has 4 Woman who experience harshness in life, joined together to make the most out of it. In "Legendary woman", they were joined mostly by their new hope which is their bakery, in "I am Legend", music is their denominator.

The friendship / sisterhood in both dramas is so strong that I wish I have one for myself. :)