>>46313
No they are Greek.

>An ancient form of cheesecake may have been a popular dish in ancient Greece even prior to Romans' adoption of it with the conquest of Greece.[4] The earliest attested mention of a cheesecake is by the Greek physician Aegimus (5th century BCE), who wrote a book on the art of making cheesecakes (πλακουντοποιικόν σύγγραμμα—plakountopoiikon sungramma).[5] The earliest extant cheesecake recipes are found in Cato the Elder's De Agri Cultura, which includes recipes for three cakes for religious uses: libum, savillum and placenta.[6][7][8] Of the three, placenta cake is the most like modern cheesecakes: having a crust that is separately prepared and baked.[9]

>A more modern version called a sambocade, made with elderflower and rose water, is found in Forme of Cury, an English cookbook from 1390.[10][11] On this basis, chef Heston Blumenthal has argued that cheesecake is an English invention.

I'm fairly sure there is some connection to Germany as well but I don't know what, because I know in German they are called kassekuchen and they are sometimes called that in anime which might mean the Japanese have an association with Germans and chesses cake for some reason.

And I'm not American my flag is just sometimes wrong here, I am Australian.