Happiness is a Peanut Butter Sandwich!

I know that they say you should eat 5 small meals a day (and don't forget the exercise) to maintain your optimum weight but my nighttime hunger has turned into what could potentially be a very bad habit! For the past week now every night after dinner I get this craving for a peanut butter sandwich. Now, I could understand this if I was eating like I did when I was young and poor (ramen noodles, mac and cheese, frozen burrito - you get the picture) but I'm not! I am eating full meals consisting of meat, vegetables and a starch. So why the constant hunger? Am I going through a growth spurt? That seems completely insane since I am rounding the corner on 40 but what else could it be? I had the candy craving for a while and thanks to Dave at the Health Food Store and some carrot juice, I have that under control. I'm actually scared to think about what he might say if I go back and tell him that I don't long for sugar babies any more but I have to have a peanut butter sandwich every night. And it's not just your ordinary PBJ - it has to be creamy skippy peanut butter and welches grape jelly on a tortilla. I have almost decided that I need to step outside of myself and not try to dissect my behavior and just roll with it - I mean, aside from a few pounds (which I could stand to gain) what could be the harm?