The Talmud records a debate from the time of the Second Temple. In it, our sages debated how to eat the seder's required foods: meat from the Passover sacrifice, maror, and matzah. Hillel advocated eating them all together, but other rabbis argued they should be eaten separately. They said each food has it's own blessing and it's own symbolism. Eating them together would be unnecessary and even confusing. Hillel, however, argued that by combining the symbol of slavery (maror), the symbol of redemption (matzah), and the symbol of God's hand in it (korban pesach), we remind ourselves that, through God's Will, even the most bitter circumstances must end.

Because the Holy Temple is not standing, there is nowhere to offer the Passover sacrifice, so we omit the lamb from the sandwich. Because maror and haroset are eaten together, we include it in the sandwich.

Combine haroset and maror between two pieces of matzah and eat your Hillel Sandwich. There is no extra blessing needed.

haggadah Section: Koreich