Cup of coffee. Onion bagel with cream cheese. To go.
It's unclear if she chews but there's definitely some inhaling going on. This, the movie tells us, is the breakfast of "smart, fat girls*" Andy hasn't yet learned that she should be counting almonds or nibbling on a cube of cheese or seeking a stomach flu.
*As comically deranged as it is to call Anne Hathaway a "smart fat girl" aren't we glad that the movies took a chance on her? [Hathaway for the win!]