Idea of Pie Icon
The icon is a pie in the classic sense of American pie. It appears that a crust with three slits in the top is with a round pie pan. You cannot see what is inside the pie as the filling is obscured by the crust.
This Pie icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 6,200 icons, all in the same style and quality.