The state needs to give public schools a larger 'piece of the pie'. [=the state needs to give public schools more funds]
He's the best player on the team and he wants a bigger 'slice of the pie'. [=he wants more money]
His plan to reduce the national debt seems like 'pie in the sky'.
(..) while we were out? Let me think. No! Edith! What did you put on my desk? A mud pie. You're never gonna get adopted, Edith. You know that, don't you? - Yeah, I know. - Good. So, how did it go, girls? (..)2010 Despicable Me