Heat a large pot or Dutch oven over medium heat.
Add the ground beef and cook until browned, breaking it up as it cooks.
Drain any excess grease.
Add the onion, garlic, and bell peppers to the pot.
Cook for 3-5 minutes, stirring occasionally, until softened.
Pour in the diced tomatoes, tomato sauce, and beef broth.
Add Italian seasoning, paprika, salt, and black pepper.
Stir well to combine.
Bring to a boil, then reduce heat and let simmer for 20-25 minutes.
Stir occasionally to prevent sticking.
Stir in the cooked rice and let it heat through for 5 minutes.
Taste and adjust seasoning if needed.
Serve hot with cheese on top, if desired.