[1] The main ingredients for the crumbs are sugar, butter, and flour,[1] which are mixed at a 1:1:2 ratio.

The recipe allegedly originated in the region of Silesia,[2][3] and is popular in German and Polish cuisines.

A streuselkuchen is usually a flat cake made on a baking tray and cut into oblong pieces.

It should be flat – about 1 inch (25 mm) thick – with crumbs making up about half of its height.

Many variants of the cake are prepared with fillings such as fruit (mostly of sour taste, e.g. apples, gooseberries, sour cherries, rhubarb), poppy seeds or creme[4] or using a shortening-based dough.