Preheat the oven to 180 C / 350 F and grease a large baking dish with oil or cooking spray.
Cut the pepper tops and remove all the ribs and seeds inside, then put them cut side up in the baking dish.
6 bell peppers
Cover the dish with foil and bake for 25 minutes.
Prepare the filling: Heat the oil in a large pan over medium heat; add the ground beef, Italian seasoning, salt and pepper.
2 tablespoon olive oil, 600 g ground beef, ½ teaspoon salt, ¼ teaspoon black pepper, ½ teaspoon Italian seasoning
Cook for 5-6 minutes, breaking up the meat with a wooden spoon or spatula.
Now, add the onion and cook for 3-4 minutes or until softened, then add the garlic and cook for 30 seconds more.
½ cup onion, 6 cloves garlic
Stir in the rice and tomato sauce, and ½ cup cheese.
2 cups cooked white rice, 460 g tomato sauce, 1 ½ cups mozzarella cheese
Fill each pepper with the beef and rice mixture, then put them in the baking dish.
Sprinkle the remaining cheese over the top of the peppers. Cover with a foil sheet and bake for 20-25 minutes, then Uncover and bake for another 10 minutes or until cheese is melted and browned and peppers are tender.
1 ½ cups mozzarella cheese
Sprinkle with parsley, then serve.
2 tablespoon parsley
Notes
I use a mix of bell peppers in different colors, and I like to choose bigger sizes so I can add more filling to them.