Preheat your oven to 350 degrees.
Cut the tops off of the peppers, remove the ribs and seeds, and then dice the tops of the peppers.
Place the hallowed out peppers in a large bowl and drizzle with a little olive oil. Cover with a plate and microwave for 7 to 10 minutes. Be very careful when you remove the plate as there will be a lot of steam.
While the peppers cook, heat a large skillet over medium heat, add olive oil. Add the chopped bell pepper tops, diced onion, and garlic. Sauté until soft, about five to seven minutes.
Add the ground turkey and break up as you cook it. Season with onion powder, parsley, basil, salt, and pepper. Cook until the meat is no longer pink.
Stir in the cooked quinoa, pasta sauce, and one cup of the mozzarella cheese. Taste the mixture and add more salt and pepper to taste. Divide the mixture between the hollowed out bell peppers. Top with the remaining cheese.
Bake uncovered for 25 minutes. Serve immediately.