This 1924 poem/recipe book, designed as promotional material for the Royal Baking Powder Company, is set in the Oz community of Bunbury. Little Billy, who won't eat, is taken to the delicious kingdom Bunbury by King Hun Bun to help whet his appetite. Meanwhile, the King leaves the boy's mother with a recipe book for treats, made easy by the use of Price's Baking Powder.

Written by Ruth Plumly Thompson, though neither her name, nor the illustrator's (Gertrude Kay) appears on the book. (Summary by P. Cunningham)