Not sure if you want a pie, cake or bread book so here's a bit of everything.
In The Sweet Kitchen: The Definitive Baker's Companion
by Regan Daley
The Good Cookie: Over 250 Delicious Recipes from Simple to Sublime by Tish Boyle
The Baker's Dozen Cookbook: Become a Better Baker With 125 Foolproof Recipes and Tried-And-True Techniques by Rick Rodgers
How to Bake: The Complete Guide to Perfect Cakes, Cookies, Pies, Tarts, Breads, Pizzas, Muffins, Sweet and Savory
by Nick Malgieri
The Art of the Tart: Savory and Sweet
by Tamasin Day-Lewis
Martha Stewart's Pies & Tarts
by Martha Stewart
The Bread Baker's Apprentice: Mastering the Art of Extraordinary Bread by Peter Reinhart