Everyone has a favorite recipe for lasagna, but not many people know history of this beloved food. Like the earliest versions of pizza, lasagna has been traced back to the ancient Greeks.When the Romans overthrew Greece and occupied the country around 146 BC, they set about adopting local knowledge, culture, language and food as their own. The Greek word laganon, used to describe flat dough sliced into strips, is believed to be the origin of the word lasagna. While the Greeks didn't invent the hearty pasta dish we know and love, they did inspire one of the world's oldest pastas.