Churn out

[Sonia]

to produce a large quantity of something very quickly:

[LouissaRini]

perform in a mechanical way

[Quadirdith 0]

produce something at a fast rate

[Mamukcer 0]

To churn out means to produce something in large quantities and often of inferior quality, usually in a rapid and mechanical manner. It is often used to refer to mass production of items or ideas, either in terms of manufacturing or other creative work such as writing or music.