Cook the Beef:Heat olive oil in a large skillet over medium heat. Add ground beef and cook until browned, breaking it apart with a spoon.
Add Aromatics:Stir in chopped onion and garlic. Cook for 3-4 minutes until softened and fragrant.
Add the Peppers:Add chopped bell peppers to the skillet. Cook for another 5-6 minutes until they begin to soften.
Season:Season with salt, pepper, paprika, and Italian seasoning. Stir to coat the mixture evenly.
Add Tomato Base:Pour in diced tomatoes and tomato sauce. Mix well and let simmer for 10 minutes to allow the flavors to come together.
Add Rice:Stir in the cooked rice until well combined. Simmer for an additional 2-3 minutes to heat through.
Top with Cheese (Optional):Sprinkle mozzarella cheese over the top. Cover with a lid and let it melt for 1-2 minutes.
Serve:Garnish with fresh parsley and serve warm.