Web novel written by Shiomura Hina
Raw Link: http://ncode.syosetu.com/n9004cy/

Summary
Izumi Maya, a 33-year-old professional pastry chef, who went out to buy some mustard, gets caught in an accident. When she regains consciousness, she has been reincarnated as a 12-year-old princess! On top of that, she also has a husband who is older than her! And a king, no less!
Maya realizes that she’s in a position where her life might be targeted, thus, decides to try to get along with her husband to protect herself!
In the name of a pastry chef, I’ll defeat the criminal and my husband’s stomach at the same time!!
Links
Part 1 – Royal Palace Conspiracy (Complete – 41 chapters + side/extra stories)
Part 2 – Royal Capital Labyrinth (Complete – 45 chapters + side/extra stories)
Part 3 (Extras) – In the Corner of a Fairytale (Complete – 21 chapters)
***4/24/21***I noticed that somebody else also started translating this series pretty recently. Feel free to check it out, however I believe they are still on part 1, a little over 90 chapters away. Some of their translations slightly differ from mine (names and translator notes, etc.) so if anyone plans to read a different version, I highly recommend starting from the beginning to read with the most consistency!