Streuselkuchen is a German

Germany

Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

 specialty. Traditionally it is made of a yeast dough covered with crumbs. The main ingredients for the crumbs are sugar, fat and flour, which are mixed at a 1:1:2 ratio.

The recipe originated from Silesia

Silesia

Silesia is a historical region of Central Europe located mostly in Poland, with smaller parts also in the Czech Republic, and Germany.Silesia is rich in mineral and natural resources, and includes several important industrial areas. Silesia's largest city and historical capital is Wrocław...

, a province that is nowadays in Western Poland

Poland

Poland , officially the Republic of Poland , is a country in Central Europe bordered by Germany to the west; the Czech Republic and Slovakia to the south; Ukraine, Belarus and Lithuania to the east; and the Baltic Sea and Kaliningrad Oblast, a Russian exclave, to the north...

, but the cake is found everywhere today. Many variants are prepared, with fillings such as creme and fruits, or using a shortening-based dough.