Hodder and Stoughton is publishing The Great British Bake Off: Children's Party Cakes & Bakes at the end of June.
World rights for the book, designed to "help parents bake the birthday cake of their child's dreams", were secured through Claire Potter at Metrostar.
It includes 70 decorative recipes, featuring cakes depicting lions, fortresses, snow queens, crocodiles, rabbits, circus, sailboats, hot air balloons and crowns, all shown through "outstanding" photography throughout.
The recipes range from simple cakes to showstoppers, and with something for every age, from toddler to teen. It is contributed to by Bake Off contestants such as series four winner Frances Quinn, 2011 finalist Holly Bell, and last year's finalist Ian Cumming, among others.
Nicky Ross, lifestyle editorial director at Hodder & Stoughton, said: "For many home bakers a child's birthday party is surely the ultimate challenge. Making something special for your child that tastes great and looks spectacular. However confident a baker you are we thought a book packed full of helpful advice and original ideas from the Bake Off experts would be a go-to book for all parents."
The book will be published on June 30th in hardback, priced £20.