I have the same problem. Although i have, after a lot of trial and error, finally figured out the right mix of higher calorie starches to eat. More regular old fashioned Catelli spagetti - no oil, no sugar, and i use pure tomato 'puree' in a jar, the richest reddest puree i have encountered (i will put in a plug if brand names are allowed..) I feel like i'd have to eat potoates constantly to get enough calories but one or two helpings of the medium to high density food like pasta has me balanced.
As I type this, I'm on my second bowl of potato/beans/corn. The corn is a special treat because with it in the bowl with the potatoes and beans, no amount of food seems to fill me up. I guess it takes more energy to digest, and i like to maximize my calorie intake.
The only problem for me incase it happens to you, is when i eat enough to feel full, and the same thing again later, but i am actually not getting enough calories, and my stomach gets sick and irritated - for a while i mistake of thinking i should eat less when that happens.