Rocket, Pear and Caramelised Walnut Salad

• 50 g walnuts, roughly chopped
• 1 tbsp maple syrup (or honey)
• 120 g rocket
• 1 pear, thinly sliced lengthways
• 30 g shaved parmesan
• 1 tbsp balsamic glaze
• 2 tbsp extra virgin olive oil