Preheat oven to 180°C (350°F)
Heat olive oil in a pan then sauté onion and garlic until fragrant
Add ground beef and cook until browned
Stir in paprika cumin chili flakes oregano salt and pepper
Mix in cooked rice and tomato sauce then simmer for 5 minutes
Stuff each bell pepper with the beef and rice mixture
Place peppers in a baking dish and cover with foil
Bake for 30 minutes then remove foil and add cheese on top
Bake another 10 minutes until cheese melts and peppers are tender
Garnish with parsley and serve warm