Which variety of English is linked to the spelling “lasagna” on Wikipedia?

American English is the variety of English linked to the spelling “lasagna” on Wikipedia.

The spelling difference reflects two forms used in Italian. Lasagne is the plural form in standard Italian and is especially associated with northern Italian usage, while lasagna is the singular form and is favored in southern Italian usage. English adopted both forms, but they developed different regional preferences.

American English commonly uses lasagna for the baked dish and for the pasta sheets, while British English more often uses lasagne. In ordinary English, both words can function as uncountable nouns for the dish, so the distinction is a convention rather than a strict rule about whether one sheet or several layers are present.

This is why “lasagna” is not an American invention, even though it is the familiar spelling in the United States. The American form reflects the influence of southern Italian singular usage, while the British form reflects the northern plural form. Menus, dictionaries, and individual speakers may still vary.