SOLVED. Not your typical cookbook - British francophile murderer [s]

[Caitlin]

I read this book this year, 2015. It is a book for adults. It's a book that starts out proporting to be a cookbook organized by seasons. The main character is a British Francophile traveling through France writing his cookbook. Toward the end it unravels and the reader sees that the fictional author is actually a serial killer.

[Kris]

The Debt to Pleasure by John Lanchester seems to match your description.

[Caitlin]

Yes - that's it. Thank you!!

[Kris]

You're welcome! That's certainly a unique plot. I added it to my TBR list. :)