Give and take

cake and gingerbread

An easy or pleasant task or experience; a piece of cake.

cake crumbs

Hardly anything.

cake walk

Something extremely easy.

eat one's cake and have it too

Alternative form of have one's cake and eat it too.

have one's cake and eat it too

To benefit by having two things which are mutually incompatible (such as eating a piece of cake and yet still possessing that piece for future use).

icing on the cake

A thing which intensifies the appreciation of something already good, or (ironic) the regretting of something already bad.

let them eat cake

Used to express a profound disconnect between the elite and the unprivileged or underprivileged, suggesting a callous indifference or detachment to their suffering.

one's cake is dough

One's actions have failed to achieve any success or make any progress.