I’m going with the general sentiment: everything is interesting to someone. What you want is someone who is interested in you and not in some facade. Not to make this sound like sour grapes, but this isn’t just an opportunity for her to find out about you but the other way round, too.
If a woman, no matter how attractive, asks you what is your favorite thing to do in your spare time, be honest.
Suppose it’s reading. She’s either interested in reading generally, or she’s into you generally and she’s just making small talk.
Or she thinks reading is dull and she could really be looking for a daredevil snowboarder who does night-boarding by helicopter in the avalanche-prone back country, parachuting blindfolded on his board while tied to a bag of cheetahs; or looking for a billionaire playboy international jet-setter who has a private continent and the body of a calender construction worker who will buy her diamond-encrusted diamonds while his purebred cloned saber-tooth tigers wearing diamond rings as they play in his kidney-shaped pool the size of Wisconsin; or looking for a humble and heartfelt writer-actor-musician-poet with a black beret and large soulful eyes bigger than Dondi’s head who will wax philosophical about her beauty as he works hard to grow the poor, eat the whales, and save brown rice. Or… you get the idea.
In the first two cases, you’re in — or at least you haven’t made any big mistakes. In the last case, if she wants what you’re not, reconsider whether it would have worked in the first place.