Peel the onions and cut out the cores at the root
ends. Make a slit from top to bottom on one side of
the onion.
Cook in boiling water for 5 minutes.
Drain, rinse with cold water and drain again.
Carefully separate the onions into layers.
Mix the
minced beef with the rice, a little salt and pepper
and the herbs. Press a small amount into each onion
'shell . Place in a single layer in a roasting tin
(pan).
Blend the passata with the stock and pour
over. Cover with foil and bake at 180°C/350°F/gas
mark 4 for about 40 minutes until the onions are
tender and the meat is cooked.
Squeeze the juice of
one of the lemons and drizzle all over. Serve hot
with the remaining lemons cut into wedges.