Sorcery & Cecelia or The Enchanted Chocolate Pot
by Patricia C. Wrede and Caroline Stevermer
I LOVED this book. It was thoroughly fun from start to finish.
Jane Austen and sorcery? Yeah, it has been done before to some extent (like Jonathan Strange and Mr. Norrell), but I liked this one better. It is entirely composed of correspondence between two ladies in Austen's England: one in London, and one in the country. And they have a very interesting time...
Really. If you like Jane Austen, and you don't mind a little bit of magic mixed in, this book is really too much fun to miss.