01 - Preheat the oven to 375°F (190°C).
02 - Slice off the tops of the bell peppers and remove all seeds and membranes. Set aside.
03 - Heat olive oil in a large skillet over medium heat. Add chopped onion and minced garlic, sauté for 2 to 3 minutes until softened.
04 - Add ground turkey to the skillet and cook while breaking it apart with a spoon until browned and fully cooked, about 6 to 8 minutes.
05 - Stir in diced tomatoes, cooked rice, dried oregano, paprika, salt, and black pepper. Cook for an additional 2 to 3 minutes to meld flavors. Remove from heat and mix in chopped parsley.
06 - Fill each bell pepper with the turkey and rice mixture, then place them upright in a baking dish.
07 - Optionally, sprinkle shredded cheese evenly over the tops of the stuffed peppers.
08 - Pour approximately 1/4 cup of water into the bottom of the baking dish and loosely cover with aluminum foil.
09 - Bake covered for 30 minutes. Remove foil and continue baking for 10 minutes until the peppers are tender and cheese is melted and golden.
10 - Sprinkle additional chopped parsley over the peppers before serving.