Preheat your oven to 200°C.
Cook the basmati rice in a small pot of salted water for about 8 minutes until parboiled, then drain and set aside.
Slice the top off the red bell pepper and carefully remove the seeds and white ribs from the inside.
Finely dice the yellow onion and mince the garlic clove.
Heat the olive oil in a skillet over medium heat and sauté the onion and garlic until soft and translucent.
Add the ground beef to the skillet, browning it thoroughly while breaking it into small crumbles with a spatula.
Stir in 50ml of the tomato passata, the parboiled rice, dried oregano, sea salt, and black pepper into the beef mixture.
Pack the beef and rice mixture tightly into the cavity of the bell pepper.
Place the stuffed pepper upright in a small baking dish and pour the remaining 50ml of tomato passata and the beef broth into the bottom of the dish.
Cover the dish with foil and bake for 25 minutes, then remove the foil and bake for another 10 minutes until the pepper is tender and slightly charred.
Garnish with chopped fresh parsley before serving.