The idiom “as easy as pie" means that something is very easy to do or understand. It's a way of expressing that a task or situation is not difficult at all.
Meaning of ‘As easy as pie’ Idiom in English
As easy as pie
Meaning
Examples
Solving the math problem was as easy as pie for Amy.
Memorizing the phone number was as easy as pie for Sarah.
After years of experience, baking cookies is as easy as pie.
It's as easy as pie for her to recall the names of people she meets.
For Jake, completing that level in the video game is as easy as pie.