Root vegetable and lentil tagine

Name: Root vegetable and lentil tagine
Prep time: 20 min
Cook time: 25 min
Total time: 45 min
Cuisine: Moroccan
Ingredients: 1 tbsp light olive oil; About 900g mixed root veg (see tip); 2 tbsp dried harissa spice mix (we used Bart); Large handful fresh parsley, stalks and leaves chopped separately; 200g dried green lentils; 2 x 400g tins cherry tomatoes; 700ml gluten-free vegetable stock; 1 preserved lemon, flesh and pith discarded, peel finely sliced; 6 prunes, stoned and quartered; 1 small cauliflower, cut into florets, any small leaves reserved; Unsweetened coconut yogurt to serve; Cooked rice or couscous to serve