Which dish, popular in America, does not exist as a unified concept in traditional Italian cooking?

Answer

Spaghetti and Meatballs

Spaghetti and Meatballs is cited as a dish popular through Italian immigration, particularly in America, that does not exist as a unified concept traditionally, where pasta and sauce are rarely served separately in that manner.

Which dish, popular in America, does not exist as a unified concept in traditional Italian cooking?
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