Preheat the oven to 375°F (190°C).
Cut the tops off the bell peppers and remove the seeds.
In a saucepan, bring the vegetable broth to a boil. Add the quinoa, reduce heat, cover, and simmer for 15 minutes or until the broth is absorbed.
In a mixing bowl, combine the cooked quinoa, black beans, corn, cumin, chili powder, salt, pepper, lime juice, and salsa.
Stuff the bell peppers with the quinoa mixture and place them in a baking dish.
Bake for 30 minutes or until the peppers are tender.