Ohio Valley–style pizza is a pizza made with cold toppings sprinkled over a square crust that has been covered with a sweet tomato sauce. It originated in Steubenville, Ohio and is commonly served in Ohio, Pennsylvania and West Virginia, mostly in and near the Ohio Valley region of those states.
From what I understand, the crust and sauce are hot and cold cheese is sprinkled on, which then gets, like, lukewarm
NGL I'm a born and raised Ohioian and I didn't learn about this monstrosity until last year. Also, the Ohio-valley refers to the Ohio River valley, so i blame West Virginia