Slice the tops off the bell peppers and remove the seeds. Set aside.
In a medium saucepan, bring the vegetable broth to a boil. Add the quinoa, reduce the heat to low, cover, and let it simmer for about 15 minutes or until all the liquid is absorbed. Fluff with a fork and set aside.
In a large mixing bowl, combine the cooked quinoa, black beans, corn, diced tomatoes, red onion, cumin, smoked paprika, chili powder, salt, and pepper. Mix well until all ingredients are incorporated.
Spoon the quinoa mixture into each bell pepper, packing it in tightly.
Place the stuffed peppers upright in a baking dish. Sprinkle the shredded cheese evenly over the top of each pepper.
Cover the dish with aluminum foil and bake in the preheated oven for 25 minutes. Then, remove the foil and bake for an additional 10-15 minutes until the peppers are tender and the cheese is bubbly and golden.
Once done, remove the peppers from the oven and let them cool slightly.
Garnish with fresh cilantro and serve with lime wedges on the side.
Notes
Feel free to customize the stuffing with your favorite vegetables.