Marinated lamb fillets with honey and lemon couscous

Name: Marinated lamb fillets with honey and lemon couscous
Ingredients: 4 best end of neck lamb fillets, about I kg (21/4lb) total weight (see Cook's tip).; 2 sprigs of rosemary; 454 g tub thick Greek yogurt; 3 garlic cloves; 300 g (11oz) soft goat’s cheese; salt and ground black pepper; 90 mL chopped mint; 250 mL (9 fl oz) olive oil; 1 aubergine, about 300g(11oz); 275 g (10oz) onion; 2 fennel, 300g (11oz) total weight; cucumber; 275 g (10oz) plum tomatoes; 60 mL each runny honey and white wine vinegar; 45 mL lemon juice; 225 g (8oz) couscous; 90 mL chopped parsley