Lasagna is a traditional pasta type that's used to make a variety of lasagna dishes consisting of thin pasta sheets that are interleaved with a mixture of savory ingredients and baked in the oven. This is probably one of the earliest forms of pasta, and some believe that its ancestor was the Greek laganon or lasanon.
The term lasagna was coined in Trento in the 16th century, and the dish was reserved for festive days. In the 1800s, baked (al forno) lasagne dishes started to emerge, especially in the south. The most famous lasagna dish is lasagne alla bolognese, and it can be found in most restaurants in Bologna.