Tenseisaki de Suterareta no de, Mofumofu-tachi to Oryouri shimasu R ~Okazari Ouhi wa My Pace ni Saikyou desu~

The moment the Crown Prince annulled her engagement, Duchess Lady Leticia regained memories of her previous life as an OL (office lady) who loved cooking. She is sent to Silver Wolf King Glenread—a man famous for hating women—to serve as a ceremonial Queen.

Leticia wants to live a relaxed, unhurried life (my pace) surrounded by fluffy creatures in the detached palace, but she ends up getting dragged into a plagiarism scandal involving a chiffon cake...!?