I'm hungry!

Does anyone have good ideas for low-calorie meals that don't involve pre-packaged food? I'm at 1,600 calories per day and finding it hard to stay there and not be hungry. I eat organic or natural, so many of the frozen diet meals are out for me. Anyone?????

Ellie

I enjoy vanilla yogurt, a chopped apple and a handful of walnuts, all mixed together.  Very satisfying.