What is "birnbrot"

Birnbrot (literally pear bread) or Birnweggen (literally pear buns) are a traditional pastry originating in Switzerland with a filling of dried pears. They exist throughout Switzerland and popular variations include "Bündener Birnbrot" (from the Kanton Graubünden), "Glarner Birnbrot" (from the Kanton Glarus), "Toggenburger Birnbrot" (from Toggenburg (district) and "Luzerner Birnweggen" (from Luzern).