Evening of Challah Separation According to Halacha

It is customary before childbirth to perform the separation of challah with a blessing. Since my family is small, I want to prepare dough in the amount required for challah separation, invite guests, conduct a challah separation ceremony, and then distribute the dough so that each woman can bake it at home. Is this permissible?

An evening of challah separation with a blessing can be held only if the challahs are baked in one place and then distributed as baked goods, or if the amount required for challah separation remains in one house. Since dough made to be distributed raw requires challah separation without a blessing.

Mishnah, Tractate Challah, Chapter 1, Mishnah 7: "A baker who made leaven to distribute is obligated in challah. Women who gave a baker to make leaven for them, if none of them has the required amount, are exempt from challah." This is also ruled in Shulchan Aruch, Yoreh De'ah, Siman 326: "A baker who made dough to make leaven for distribution is obligated in challah, because if it is not sold, he will make it into bread. But (another person) who makes dough to distribute it raw is exempt." The Shach there, S.K. 5, writes: "But if he does not intend to distribute the dough, even if he intends to distribute it after baking, he is obligated." This is also written in Beit Yosef, contrary to the opinion of the Smag, who disagrees. The rabbis are divided in explaining this law, and there are several approaches. Some believe it refers to one who divides the dough (in the amount requiring separation) among several people and is exempt from separation, others believe it refers to one who prepares dough intending to bake part today and part another day, others believe it refers to one who prepares dough intending to divide it into two types of baked goods, such as challah and cake. According to the law, all interpretations are considered, and in all the aforementioned cases, challah is separated without a blessing. However, if a large amount of dough is prepared, and it contains 2.250 kg (or according to other customs 1.700 kg), and this amount is intended for one person who bakes from this amount one type of baked good in one day, even if the rest of the dough is intended for distribution to others or for different types of baked goods or on different days, challah is still separated with a blessing.