We met with Chef Patrizia Volanti at Smorgasburg a few weeks ago. They're currently selling their spaghetti burger (among other foods!) that Volanti created for Smorgasburg specifically - inspired by a traditional south of Italy recipe.
Italian families used to use the left over pasta from the night before and create a kind of frittata di pasta using usually spaghetti. Once it's cooked, it looks like a crunchy cake made out of pasta, previously egg washed, covered with bread crumbs, cooked it in a pan and eventually finished in the oven to get a better color on top, or in the south of Italy, fried, served in slices like a cake."