My son is four and goes through spurts where he just seems to be vacuum cleaner, sucking up everything. What works for us when he's in one of these growth-spurt phases:
Breakfast: toast and cereal, sometimes an egg with that, or apple slices. (He eats earlier than I do, hence the sometimes on the egg) Rice milk or water with the meal, his choice.
Morning snack: at home, usually a mix of nuts, fruit, a couple crackers, sometimes a serving of cheese or yogurt with berries. Water or rice milk with the meal.
Lunch: A whole sandwich on whole grain bread, usually almond butter and jelly. A serving of cheese (string mozzarella or something I'm having), at least a quarter of a large apple or a banana, some celery or carrot sticks. NOTE: I leave his lunch plate 'intact', which means I put a plastic bag around it and pop it in the fridge. If it's not finished, that's what he snacks on.
Afternoon snack: more veggies, some fruit, some crackers or pretzels or whole grain toast. Sometimes I'll have some leftovers like soup or mac-n-cheese from the night before and he's welcome to have that.
Dinnertime: A protein (fish or tofu, usually, sometimes egg or beans), a starchier carb like gnocchi with olive oil and Parmesan (he could eat a truck of it) or pasta or brown rice, and a green vegetable. AFTER a plate of this, if he's still hungry, he can have seconds or some apple slices, which he will also eat all the time. If I don't have a starchier carb, I'll often offer him a piece of bread and butter to substitute.
We rarely do desserts, but when I do, I serve them right after lunchtime or snacktime as a surprise. This eliminates any "eat your dinner so you can have dessert" battles and helps him get that sugar out of his system before bedtime.
You might also look at the book "the zone" by Dr. Barry Sears. Check it out from your library or see his site online. Many of the 'favorable carbs' are deemed thus because they do tend to stay with you a little longer. For instance, steel-cut oats oatmeal will keep one full longer than plain ol' oatmeal or most cereals. My son LOVES when I make the oats with raisins and cinnamon: Joy of Cooking has a great recipe to try out for that.
I hope someone gives you some information that helps.