When did Lasagna become a popular food source?

The exact time period of lasagna becoming a popular food source is not well documented. However, it is believed to have originated in Naples, Italy, around the 14th century. The dish is mentioned in a cookbook written in Naples in the 14th century, and it is believed to have spread throughout Italy in the following centuries. By the 18th century, lasagna had become a popular dish throughout Europe, and it was later introduced to the Americas by Italian immigrants.