Crumb Cake is a soft and moist cake topped with a thick layer of crumbly streusel topping, baked to perfection, and served with a dusting of confectioners' sugar. It can be enjoyed as a breakfast treat with a cup of coffee or tea or served as a dessert. Even though it's called a crumb cake, don't expect to find any crumbs left behind on anyone's plate...it's that good!