Steps
1. Preheat your oven to 375°F (190°C).
2. Cut the top off the bell pepper and remove the seeds and membranes.
3. In a mixing bowl, combine cooked quinoa, black beans, onion, garlic, cumin, chili powder, salt, and pepper.
4. Stuff the bell pepper with the quinoa mixture, pressing down lightly to pack it in.
5. If using, sprinkle shredded cheese on top of the stuffed pepper.
6. Place the stuffed pepper in a baking dish and add a splash of water to the bottom of the dish to create steam.
7. Cover the dish with foil and bake for 25-30 minutes, until the pepper is tender.
8. Remove from the oven, let cool slightly, and garnish with fresh cilantro before serving.