Prepare the onions

• Peel the onions, cut them in half and hollow out the centre, keeping the outer layers intact.
• Chop the removed onion flesh finely and set aside.

Make the filling

• Heat the olive oil in a frying pan and brown the ground beef.
• Add the chopped onion, rice, tomato paste, paprika, salt and pepper and cook briefly.
• Stir in the chopped parsley and remove from the heat.

Stuff the onions

• Fill the onion halves with the meat and rice mixture.
• Arrange them in a baking dish and pour the vegetable stock around them.

Bake

• Cover the dish with foil and bake at 180 °C until the onions are tender and the rice is cooked.

Serve

• Uncover and serve the stuffed onions hot with the cooking juices.