What Exactly Is Minnesota Hotdish, And Is It Different Than A Casserole?
By Elias Nash
Similar to a casserole, the main components of a hotdish—which is regarded as Minnesota's culinary calling card—are meat, vegetables, starch, sauce, and toppings.
Its most recognizable layer, however, is tater tots, but fried onions, potato chips, chow mein noodle crisps, and good old melted cheese are also popular choices.
A hotdish has a slightly narrower definition than a casserole and is more or less a subcategory of one. All hotdishes are casseroles, but not all casseroles are hotdishes.
The main difference between the two is where you make it. What people in Minnesota or North Dakota call hotdish, people in Indiana call tater tot casserole.