be (as) easy as pie

To be extremely easy, simple, or intuitive; to require very little skill or effort. After so many years as an accountant, doing taxes is as easy as pie for me. Boy, that test was easy as pie!

Also, easy as falling or rolling off a log . Capable of being accomplished with no difficulty, as in This crossword puzzle is easy as pie. The first term presumably alludes to consuming pie (since making pie requires both effort and expertise). The variants most likely allude to standing on a log that is moving downstream, a feat in which falling off is a lot easier than remaining upright. Mark Twain had it in A Connecticut Yankee in King Arthur's Court (1889): "I could do it as easy as rolling off a log." The first colloquial term dates from the early 1900s, the colloquial variants from the 1830s. For a synonym, see piece of cake.

If something is easy as pie or easy as ABC, it is very easy to do. Note: In the first idiom below, ABC is pronounced `a b c', as if you are spelling it out. With technology the way it is, it's as easy as pie to work from remote locations. With our guide, planning your US fly-drive holiday will be as easy as ABC. Compare with a piece of cake. Note: The reference is probably to eating a pie rather than making one.

Capable of being accomplished or done with no difficulty.

Not difficult; requiring little or no effort or expertise. The analogy no doubt is to eating pie rather than making it, which requires both effort and expertise. An American term dating from the early twentieth century, it became a cliché relatively recently. See also duck soup; easy as rolling off a log; piece of cake.