Roasted Veg, Couscous & Halloumi Traybake - Ainsley Harriott

Ingredients

• 1 red onion, cut into wedges
• 1 courgette, sliced
• 1 yellow pepper, deseeded, cut into 1/4
• 3 or 4 small tomatoes, halved
• Handful of pitted black olives
• 2 cloves garlic, sliced
• 2 tbsp olive oil, plus extra for drizzling
• 1 x packet Ainsley Tomato and Chilli Couscous
• 170ml water
• 180g halloumi, sliced
• Lemon wedges and chopped parsley, to serve