'The cake mix Doctor' is in! And the prescription is simple: By doctoring up packaged cake mix with just the right extras -- a touch of sweet butter here, cocoa powder there, or poppy seeds, vanilla yogurt, grated lemon zest -- even the least experienced baker can turn out luscious signature desserts, time after time. Layer cakes, cheesecakes, coffee cakes, sheet cakes, pound cakes, bars, brownies, and those all-important frostings: here are 175 fast and foolproof recipes that are transforming the art of home baking in America. Hardcover, 454 pages.