01 -
Arrange an oven rack in the centre position and preheat oven to 200°C. Cut the tops off the bell peppers, core and remove seeds. Arrange peppers cut side up in a 33-by-23 centimetre baking dish.
02 -
In a large skillet over medium heat, add olive oil. Sauté chopped onion, stirring occasionally, until softened, about 7 minutes. Add garlic and tomato paste, cooking and stirring until fragrant, approximately 1 minute.
03 -
Add ground beef to skillet. Cook, breaking up the meat with a wooden spoon, until no longer pink, about 6 minutes. Drain excess fat as needed.
04 -
Stir in cooked rice and diced tomatoes. Sprinkle in dried oregano, and season with salt and pepper. Let the mixture simmer, stirring occasionally, until the liquid reduces slightly, about 5 minutes. Taste and adjust seasoning if necessary.
05 -
Drizzle the inside and tops of prepared bell peppers with a little olive oil. Spoon the beef and rice mixture evenly into each pepper.
06 -
Cover the baking dish with foil. Bake in preheated oven for 35 minutes until peppers are tender.
07 -
Uncover peppers, sprinkle with shredded Monterey Jack cheese. Return to oven and bake uncovered until cheese is melted and bubbly, about 10 minutes.
08 -
Remove peppers from oven, garnish with chopped fresh parsley, and serve hot.