Cake Girl (2009, by David Lucas) is an adorable witchy book that isn't too Halloweeny - in case your kids get all overwhelmed with the Halloween themed books you read with them in the next month or two.
"Cake Girl" features a message about friendship that I approve of. A witch is spending her birthday alone. That bothers her, so she bakes a cake girl to keep her company.
She bosses the Cake Girl around, makes her clean, and threatens to eat her.
The Cake Girl teaches the witch how to have fun, be a good friend, and in return the witch (kinder now) teaches the Cake Girl how to transform herself into anything she wants. A sappy, happy ending, but that's ok with me. The artwork is whimsical and features gorgeous and vibrant fall colors.