Preheat oven to 180°C (350°F).
Cut the tops off bell peppers and remove seeds.
Heat oil in a pan and sauté chopped onions and garlic.
Add vegetables (like carrots, corn, or beans) and cook for a few minutes.
Stir in cooked quinoa, spices, salt, and pepper.
Fill the bell peppers with the quinoa mixture.
Place stuffed peppers in a baking dish and bake for 25–30 minutes.
Garnish with fresh herbs and serve warm.