My church holds a Seder on the Thursday before Easter, with the traditional foods (but no Matzoh Balls or Gefilte Fish - I don't think our folks would eat that). A Seder in total silence.
The Last Supper is thought to have been Seder. Maybe the bread was Matzoh?
Alas, we do not serve wine in our church so cannot follow the Jewish tradition of drinking a little too much of it at supper.
A bit about traditional Seder foods.