Strudel is a type of pastry often filled with apples. It is a traditional dish in many Central and Eastern European countries, such as Austria, Hungary, and Germany. Strudel is made from a thin sheet of dough that is stretched or rolled out and layered with a filling before being baked. The most popular type of strudel is apple strudel, which is made with a sweetened apple filling. Other types of strudel may be filled with cheese, poppy seeds, or other sweet or savory ingredients.