Leckerbissen is a German word meaning treat, tidbit, or delicacy.
Lecker means yummy or delicious; ein Bissen is a bite.
Here is a recipe that will provide you with a YUMMY BITE (or two or more):
(this is one of many, many variations of a German-style apple cake)
Many, maybe most, German Kuchen are simple cakes, usually made of a basic flour/egg/sweetener dough - often with fruit exposed on top - and sometimes glazed. Kuchen are not usually too sweet.
Not to be confused with what is called a Torte, which is not to be compared to an English tart!
A Torte will usually be cream or jam-filled/topped, often layered, and sometimes are soaked with simple syrups (or liqueur).
Although there are ALWAYS exceptions!
I once heard that "All Torten are Kuchen - but not all Kuchen are a Torte."