In the Geonic Haggadah that we use, we find the most well-known explanation for eating matzot on Pesah: the children of Israel brought dough with them from Egypt and baked it as matzot because there was not time for it to rise. This is based on reading Shemot 12:39 as a series of clauses each explaining the one before: and they baked the dough they had brought out from Egypt into matzot because it had not risen because they had been driven out from Egypt and were not able to tarry… This …
[Read more...] about Parshat Bo: Why did they bake their dough into matzot?