Preheat the oven to 200°C/180°C/Gas Mark 6. Slice the pears and place them in a single layer on a baking sheet. Sprinkle over the lemon juice and sugar and bake for 15 minutes or until lightly caramelised.
Spread the sliced bread out in a single layer on a baking sheet and drizzle over the oil. Bake for 10 minutes or until golden and crisp. Leave to cool with the pears. Make the dressing by whisking all the ingredients together with a fork, in a small bowl.
When ready to serve, spread the toasted bread with the goats cheese, scatter over the walnuts and bake for 5 minutes in the hot oven. Arrange the salad leaves between 6 plates, top with the pears and finally the cheese topped croutons. Serve straight away.
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