Here in Peru I found the healthiest, highest protein, least processed breakfast cereal in the world, its puffed quinoa cereal! Its puffed like rice crispies which gives it a great crunchy texture. I sure wish someone would import this cereal into USA! Here is the nutritional info for quinoa, compare this to any American cereal, it even is better than my beloved oatmeal when it comes to protein.
100 g serving (more than most people would eat)
Edit: Just found you can buy this cereal right here in the USA! Puffed quinoa cereal from amazon.com