Cut a slice off the top of the length of each courgette and carefully
hollow out the insides, using a long-handled
teaspoon.
Rinse the rice well then mix with the meat
and a little salt and pepper, the garlic and the
melted butter.
Pack loosely into the courgettes,
leaving a gap of about 2 cm/ 1/4 in at the top of
each. Lay in a single layer in a large flameproof
casserole (Dutch oven).
Blend the tomato puree with
the lemon rind, mint and stock. Pour over the courgettes, adding water if necessary to cover them
completely.
Bring to the boil, reduce the heat,
cover and simmer very gently for about 45 minutes
until tender and the meat and rice are cooked
through.
Carefully transfer to a serving dish and
serve the cooking juices separately.