Cut the tops off the bell peppers and remove the seeds and membranes. Lightly brush the outside of the peppers with olive oil and arrange them in a baking dish.
In a large skillet over medium heat, add 2 tablespoons of olive oil. Once hot, add the chopped onion and minced garlic. Sauté until the onions become translucent.
Add the ground turkey to the skillet, breaking it apart with a spatula. Cook until browned and fully cooked, about 7-10 minutes.
Stir in the cooked quinoa, black beans, corn, diced tomatoes, cumin, smoked paprika, chili powder, salt, and pepper. Mix well to combine and heat through for about 3-5 minutes.
Remove the skillet from heat and mix in half of the shredded cheese.
Spoon the turkey filling generously into each prepared bell pepper, packing it down slightly.
Top each stuffed pepper with the remaining shredded cheese.
Cover the baking dish with foil and bake in the preheated oven for 25 minutes. Remove the foil and bake for an additional 10-15 minutes, or until the cheese is melted and bubbly and the peppers are tender.
Once done, allow the stuffed peppers to cool slightly before serving. Garnish with fresh cilantro or parsley.
Notes
Feel free to customize the filling with your favorite ingredients.