Instructions

1. Preheat the oven to 180°C.
2. Cut the marrow in half lengthwise, scrape out the seeds and wispy hairs, then peel off the skin.
3. Place the marrow halves in a baking dish.
4. Scatter the couscous in a bowl, pour over the lemon juice and enough hot water to cover it. Cover, let it rest for five minutes.
5. Meanwhile, peel and thinly slice the onion. Cut the peppers into thin strips, remove the seeds of tomatoes and cut the flesh into small cubes. Coarsely chop the chorizo sausage.
6. Heat the oil in a frying pan, lightly soften the onion and add the chorizo pieces.
7. When the sausage has browned and released its fat and, stir in the couscous, tomato pieces, pepper strips and chopped herbs. Mix well, then season with salt and pepper. Turn off the heat.
8. Fill the marrow halves with the mixture.
9. Bake for about 20 minutes or so, until the marrow flesh is tender.