Preheat your oven to 375°F.
Slice the top off the bell pepper and remove seeds and membranes, setting the pepper aside.
In a skillet over medium heat, sauté the chopped onions and garlic until fragrant, about 2 minutes.
Add the lean ground turkey to the skillet and cook until browned, breaking it apart with a spoon.
Stir in the cumin, chili powder, salt, and pepper to season the turkey evenly.
Mix in the cooked quinoa, black beans, sweet corn, and diced tomatoes. Allow the mixture to heat through and meld together for about 3-4 minutes.
Remove from heat and stir in the lime juice.
Stuff the hollowed bell pepper with the quinoa and turkey mixture, packing it in firmly.
Place the stuffed bell pepper in a baking dish and cover with foil.
Bake in the preheated oven for 25-30 minutes, until the pepper is tender.
Remove the foil during the last 5 minutes of cooking if you prefer a slightly crisp top.
Serve hot and enjoy your zesty, nutritious meal.