The Nanaimo bar /nəˈnaɪmoʊˌbɑːr/ is a dessert item of Canadian origin popular across North America. It is a bar dessert which requires no baking and is named after the west coast city of Nanaimo, British Columbia. It consists of a wafer crumb-based layer topped by a layer of custard flavoured butter icing which is covered with melted chocolate made from chocolate squares. Many varieties exist, consisting of different types of crumb, different flavours of icing (e.g., mint, peanut butter, coconut, mocha), and different types of chocolate.