Prepare the peppers

• Cut the bell peppers in half and remove the seeds and membranes.
• Place them cut side up in a baking dish.

Cook the filling

• Heat the olive oil in a frying pan and soften the onion and garlic.
• Add the ground beef and cook until browned.
• Stir in the cooked rice and half of the tomato passata, then season with salt and pepper.

Fill the peppers

• Spoon the beef and rice mixture into the pepper halves.
• Pour the remaining tomato passata around the peppers and top with the grated cheese.

Bake

• Bake at 180 °C until the peppers are tender and the cheese is golden.