A satisfying, simple family dish that's ready and on the table in less than 60 minutes.
Preheat the oven to Gas Mark 5, 190°C, fan 170°C. Put the veg (apart from the spinach) and garlic in a single layer in a roasting tin. Whisk the oil and harissa together, and then drizzle over the veg. Season. Roast for 35-40 minutes, until the vegetables are tender.
Put the couscous in a heatproof bowl. Pour over the hot stock, cover and set aside for 10-15 minutes. Fluff up with a fork, then stir through the spinach and the lemon zest and juice.
Stir through the roasted vegetables, plus any pan juices. Serve immediately.
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