In a medium bowl, combine the cooked quinoa, onion, carrot, celery, corn, black beans, jalapeno pepper, garlic powder, cumin, chili powder, black pepper, and salt.
Stuff each pepper half with the quinoa mixture.
Place the stuffed pepper halves in a baking dish.
Pour the tomato sauce over the stuffed peppers.
Cover the dish with aluminum foil.
Bake for 30 minutes, or until the peppers are tender.
Remove the foil and sprinkle the cheese over the peppers.
Bake for an additional 10 minutes, or until the cheese is melted.
Serve warm.
Interesting Facts
Quinoa is a complete protein, meaning it contains all nine essential amino acids.
Bell peppers are an excellent source of vitamin C and other antioxidants.
Stuffed peppers can be served as a side dish or as a main course.