Lou Malnati's Pizzeria
The first Lou Malnati's Pizzeria opened in 1971 to much acclaim, and it’s now a Chicago — and national — institution. Lou died of cancer just seven years later, but his family kept his dream alive, expanding his chain to 42 locations at last count.
The Lou Malnati’s deep-dish experience comes in four sizes: six-inch individual (serves one), nine-inch small (serves two), 12-inch medium (serves three), and 14-inch large (serves four). So you most likely will just be ordering one or two if you plan to finish them, even with a few friends (unless you’re not planning to eat anything else that day).
They do actually make a thin-crust pie, but what’s the matter with you? You’re not visiting for thin-crust, so make sure one of those picks is the Malnati Chicago Classic: a casserole (remember, deep dish isn’t technically pizza) made with Lou's lean sausage, some extra mozzarella, and vine-ripened tomato sauce on buttercrust. "It's authentic Chicago!"
— Arthur Bovino, 101 Best Pizzas in America 2015, 8/6/2015