How about a hot cooked cereal? We buy cereal flakes from a co-op and get rye, barley, oats, wheat. How about whole grains like wheat, oat groats, barley, millet cooked overnight in a crockpot?
When we do a cooking class, we always include a millet cereal in a crockpot and so far, every single person has loved it. One man even asked for leftovers to take home with him
You can add all kinds of dried fruit, coconut, maple syrup, etc. when you start the crockpot. Every morning for breakfast, we have 1 1/2 cups of hot cereal per person, and we add home canned in juice nectarines, blueberries and/or pears, then we add fresh apple, strawberries, peaches or whatever fruit is in season. Then throw in a small handfull of walnuts or a tablespoon of ground flax seed. We never get tired of this because the fruits are always different. We never get hungry before lunch because of all the good fiber.
We gave up on dry cereal many years ago when the kids were small. They could eat a whole box at one meal and then still be hungry before the next meal. It just didn't work for us, besides being insanely expensive. For us, hot cereal is the way to go!!