01 - Preheat oven to 375°F.
02 - Slice off tops of bell peppers and remove seeds and membranes. Place peppers upright in a baking dish.
03 - Heat olive oil in a large skillet over medium heat. Add onion, celery, and chopped green bell pepper. Sauté for 3-4 minutes until softened.
04 - Add minced garlic and cook for 1 minute until fragrant.
05 - Add ground beef to skillet. Cook, breaking up with a spoon, until browned and cooked through, about 5-7 minutes. Drain excess fat if necessary.
06 - Stir in diced tomatoes, Creole seasoning, smoked paprika, thyme, oregano, cayenne pepper, salt, and pepper. Simmer for 5 minutes.
07 - Remove skillet from heat. Stir in cooked rice and tomato sauce. Mix thoroughly.
08 - Fill each bell pepper with the beef and rice mixture, pressing down gently to pack.
09 - Pour broth into the bottom of the baking dish around the stuffed peppers.
10 - Cover dish tightly with aluminum foil and bake for 35 minutes.
11 - Remove foil, sprinkle tops with cheddar cheese if desired, and bake uncovered for an additional 10 minutes until peppers are tender and cheese is melted.
12 - Let peppers rest for 5 minutes before serving.