Food & Nourishment,- It is not permissible to eat foods that are prepared by the kuffaar for their festivals.

Is it permissible for a Muslim to eat the foods that the people of the
Book or the mushrikoon prepare for their festivals or accept such
foods if they are given on the occasion of their festivals?.
Praise be to Allaah.
It is not permissible for the Muslim to eat foods that the Jews,
Christians and mushrikoon make for their festivals. It is not
permissible either for a Muslim to accept such things that are given
to them on the occasion of their festivals, because that implies
honouring them and cooperating with them in manifesting their symbols
and propagating their innovations and sharing their happiness on the
days of their festivals. That may also lead to taking their festivals
as festivals for us too, or to exchanging invitations to meals or to
give gifts on one another's festivals at the very least.This is a kind
of deviation and innovation in religion. It was proven that the
Prophet (peace and blessings of Allaah be upon him) said: "Whoever
introduces anything into this matterof ours that is not part ofit,
will have it rejected." And it is not permissible to give them
anything on the occasion of their festivals.
Al-Lajnah al-Daa'imah, 22/398.