I can so relate to being hungry all the time. When I first started riding I found it nearly impossible to convince everyone at work that I wasn't pregnant with my eating habits.
I can say that it has gotten better, but if I do a ride over 50 miles I feel like I am hungry for days!! I find that I do the best if I eat the majority of my calories early in the day. So, I take lots of early day snacks to work. I bring fresh fruit, berries now that they are in season, yogurt, and almonds. Bananas are really the perfect bike food. I eat two every day. I find that if I pack everything in early I ride much better and really don't snack at all at night. I usually crave bad snacks at night and this really doesn't happen if I eat well all day. My only downfall is Fruit Snacks. I eat them or Jelly Belly Sport Bean while I ride. I really need the sugar then, or I just die!