Step 1: Prepare the Peppers - Preheat your oven to 375°F (190°C). Cut the tops off the bell peppers and remove the seeds and membranes. Set them aside.
Step 2: Sauté the Aromatics - In a large skillet, heat the olive oil over medium heat. Add the chopped onion and sauté for about 3-4 minutes until translucent. Stir in the minced garlic and cook for an additional minute until fragrant.
Step 3: Cook the Turkey - Add the lean ground turkey to the skillet. Cook until browned, breaking it apart with a spatula, about 5-7 minutes. Drain any excess fat if necessary.
Step 4: Add Tomatoes and Spices - Stir in the can of fire-roasted tomatoes, oregano, thyme, basil, chili powder, smoked paprika, salt, and black pepper. Let the mixture simmer for about 5 minutes, allowing the flavors to meld.
Step 5: Combine with Rice and Cheese - Remove the skillet from heat and mix in the cooked brown rice and half of the shredded cheddar cheese. Stir until well combined.
Step 6: Stuff the Peppers - Carefully spoon the turkey and rice mixture into each bell pepper, packing it down slightly. Place the stuffed peppers upright in a baking dish.
Step 7: Bake - Top each stuffed pepper with the remaining cheddar 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 bubbly and slightly golden.
Step 8: Garnish and Serve - Once baked, remove the peppers from the oven and let them cool for a few minutes. Garnish with chopped cilantro if desired, and serve warm.