Depends on what your goals are, weight loss, muscle gain...Personally, since I'm always trying to put on more muscle, I will eat unsalted peanuts or cashews with cottage cheese...the casein helps to feed your muscles through the night. Not the most appetizing, but it gets the job done.
I'd agree with the casein recommendation for sure. It drip feeds protein to the muscle over a longer duration so offsets the lack of eating while asleep. Don't be afraid to throw in some carbs too - they release serotonin which'll help you sleep.