"As easy as pie" is a popular colloquial idiom and simile which is used to describe a task or experience as pleasurable and simple.[1] [2] The phrase is often interchanged with piece of cake, which shares the same connotation.[2]
The phrase was used in 1910 by Zane Grey in "The Young Forester" and in the Saturday Evening Post of 22 February 1913. It may have been a development of the phrase like eating pie, first recorded in Sporting Life in 1886. In 1855, the phrase, in a slight variation was published in a book called Which? Right or Left? Here it was used as nice as a pie.[3] Alternatively, in pre-reformation England the collection of liturgical rules for all 35 various days when Easter could fall was called Pie. Easy as pie could be ironically referring to overly complicated rubrics.[4]
There are some claims that its use in New Zealand in the 1920s was influenced by the similar expressions pie at or pie on from the Maori term pai 'good'.