There are precious few satisfying answers to the question above. I have gone to the trouble to list them for you here.
“Oh, I dabble in literary fiction, you may have heard my address at the Nobel Prize ceremony?”
“Joanne Rowling. Lovely to meet you.”
“Mainly plays. Probably nothing you know. Ah, you’ve read King Lear, have you?”
Or even: “Very few, actually. I’ve barely put pen to paper since dashing off Catcher in the Rye back in the 50s.”