over-egg

over-egg the pudding (or cake) go too far in embellishing, exaggerating, or doing something.

☞ Excessive quantities of egg in a pudding could either make it too rich or cause it not to set or cook correctly.

2011Pop Matters The combination of rich dialect and elaborate descriptions is to overegg the pudding, and … the unceasing pace of this formula page after page is akin to serving up bowl after bowl of it.