1. Preheat oven to 400°F. Bake the sweet potato for 45-60 minutes or until soft.
2. While the sweet potato is baking, cook the quinoa and barley in separate pots until soft, about 30-60 minutes (barley takes a little longer).
3. Remove the stem and seeds from the red peppers. Cut the whole pepper in quarters and the half a pepper in half, and roast all six pieces in the oven for about 15-20 minutes.
4. Once the sweet potato is baked and cooled, combine garbanzo beans, sweet potato, parsley, cayenne pepper, cumin, salt and pepper, flour, and one tablespoon oil in a food processor.
5. Allow the grains to cool, and then in a separate bowl, mix the bean mixture with the quinoa and barley.
6. Heat the remaining tablespoon of oil in a large pan on medium heat. Place heaping spoonfuls of the mixture onto the hot pan, and use the back of the spoon to pat them flat and form four-inch diameter patties. Brown both sides of each burger. Serve on a bun with one piece of the roasted pepper, sliced into thirds.

Nutritional information is for one patty served with a slice of roasted pepper.

Source: Calorie Count [1]