A date square or matrimonial cake[1], is a Canadiandessert or bar cookie made of cooked dates with an oatmeal crumb topping.[2][3] In the western provinces and states it is known as matrimonial cake.[4][5] In Eastern Canada it can also be known as date crumbles.[6] It is often found in coffee shops as a sweet snack food. Sometimes nuts are added to the base layer or crumb topping, or other alterations.[7] There can also be candied peel added to the date stuffing for a contrasting texture.[8]