Roasted squash with pesto & mozzarella

INGREDIENTS

• 1 small butternut squash , halved and sliced into 2cm-thick slices
• 3 tsp olive oil
• 1 tsp dried crushed chillies
• 1 red onion , cut into thin wedges
• 2 red peppers , cut into chunky pieces
• 50g bag rocket leaves
• juice ½ lemon
• 125g ball light mozzarella
• 4 tbsp fresh pesto