01 - Preheat oven to 375°F. Lightly grease a baking dish large enough to hold the stuffed peppers upright.
02 - Heat a large skillet over medium heat. Add ground beef and kielbasa, cooking for approximately 7 minutes until browned. Drain excess fat from the skillet.
03 - Add diced onion and minced garlic to the meat mixture. Sauté for 3 to 4 minutes until onion becomes soft and translucent.
04 - Stir in cooked rice, drained diced tomatoes, 4.25 oz cheddar cheese, parsley, smoked paprika, oregano, salt, and black pepper. Mix thoroughly until all ingredients are evenly distributed.
05 - Spoon the cheesy beef and rice filling into each hollowed bell pepper, pressing gently to pack the filling securely.
06 - Place stuffed peppers upright in the prepared baking dish, ensuring they stand stable.
07 - Pour beef broth around the base of the peppers to create steam and keep peppers moist during baking.
08 - Cover baking dish tightly with aluminum foil. Bake for 30 minutes until peppers begin to soften.
09 - Remove foil and sprinkle remaining cheddar cheese over each pepper. Return to oven uncovered for 15 minutes until cheese is golden and bubbly and peppers are tender.
10 - Allow stuffed peppers to rest for 5 minutes before serving. Garnish with additional fresh parsley if desired.