Frozen challah for lechem mishneh?

can i use a frozen challah for lechem mishneh and put it back in the freezer?

The question isn’t clear. Are you planning on eating a frozen challah? Or are you using that as the second,? If you don’t have Matza or another challah, to use for the Lechem Mishneh, then that would be okay. If this is the challah you plan on eating it must not be frozen.

Not planning on eating it. Just putting it back in the freezer after saying hamotzi.

Not planning on eating it. Just putting it back in the freezer after saying hamotzi.

As mentioned that would be ok. But it’s not a first choice.

You are doing the mitzvah of lechem mishne and ideally both breads should be breads you can eat. So much so that the Rav has said it’s worthwhile to remove the second one from its plastic bag.

Thanks!