01 - Preheat the oven to 375°F.
02 - Drizzle 1 tablespoon olive oil inside a baking dish large enough to hold the peppers snugly.
03 - Heat 1 tablespoon olive oil in a large skillet over medium heat. Sauté the finely chopped onion for 3 to 4 minutes until translucent. Add minced garlic and cook for an additional minute.
04 - Add ground beef to the skillet and cook until browned, breaking it apart with a spoon, about 5 to 6 minutes. Drain excess fat if necessary.
05 - Stir in quartered cherry tomatoes, cooked rice, dried oregano, ground cumin, smoked paprika, salt, and pepper. Cook together for 3 minutes, then remove from heat.
06 - Fold in crumbled feta cheese, chopped parsley, and chopped mint (if using). Adjust seasoning to taste.
07 - Fill each prepared bell pepper generously with the beef mixture and place them upright in the baking dish.
08 - Pour the broth into the bottom of the baking dish. Cover with aluminum foil and bake for 30 minutes.
09 - Remove the foil and continue baking for another 10 minutes, until the peppers are tender and the tops are lightly browned.
10 - Allow the stuffed peppers to rest for 5 minutes before serving. Garnish with additional parsley if desired.