a piece of cake

: a breadlike food made from a dough or batter that is usually fried or baked in small flat shapes and is often unleavened

: a sweet baked food made from a dough or thick batter usually containing flour and sugar and often shortening, eggs, and a raising agent (such as baking powder)

: a flattened usually round mass of food that is baked or fried

: encrust

: to fill (a space) with a packed mass

: to form or harden into a mass