"Prends les pommes dont tu as besoin pour la tarte."

Translation: Take the apples that you need for the pie.

[GarethHanc1]

If it is open top it is a tart in English and if it has a pastry top it is a pie. So is there this diferential in French please?

[JoannaNutley]

Answering 'take the apples you need for your pie (or tart)' should also be accepted!

[Jojo553168]

Your pie doesn't translate la tarte.