Prepare the bell peppers by slicing off the tops and carefully removing the seeds and membranes. Once cleaned, place them upside down in a baking dish to keep them sturdy.
In a medium saucepan, combine the rinsed quinoa and vegetable broth (or water). Bring this mixture to a vigorous boil, then reduce the heat to low, cover, and let it simmer for about 15 minutes, or until the quinoa is fluffy and all the liquid has been absorbed.
While the quinoa cooks, heat a drizzle of olive oil in a large skillet over medium heat. Add the diced onion and sauté for 3-4 minutes until it becomes translucent and fragrant. Then, add the minced garlic along with the cumin, smoked paprika, chili powder, salt, and pepper, cooking for an additional minute to let the spices bloom.
Next, stir the black beans and corn into the skillet, mixing everything together until evenly combined.
Once the quinoa has finished cooking, fold it into the skillet mixture and stir thoroughly to ensure even distribution. Remove the skillet from the heat.
Generously spoon the quinoa filling into each bell pepper, pressing down lightly to pack the mixture. Top each stuffed pepper with a generous amount of shredded cheese.
For steaming during cooking, pour a small amount of water into the bottom of the baking dish—just enough to cover it—before proceeding.
Cover the baking dish snugly with aluminum foil and transfer to the preheated oven. Bake for 25 minutes.
After 25 minutes, remove the foil from the dish and continue to bake for an additional 10 minutes, allowing the cheese to melt and bubble beautifully.
Once done, let the stuffed peppers cool for a few moments. Before serving, garnish them with freshly chopped cilantro or parsley for a burst of color and flavor.
Notes
Serve on a colorful platter and drizzle with olive oil for presentation.