Oh, totally forgot this one-- COFFEE, BLACK! from "big, the Musical"... the whole song's lyrics are about perking up and coffee (who needs sugar and cream?!). Still, MARIA'S SONG (THE COOKING LESSON) from "Smile" is an entire song about mexican food and Cooking... not just one or two lyrics mentioning food, like some of the suggestions.
And if she'll say, "My darling, I'm yours!" I'll throw away my striped tie and my best pressed tweed, all I really need is the girl...