Pear & hazelnut dartois - Good Food Middle East

Ingredients

• 1 lemon
• 250g granulated sugar
• ½ tsp vanilla extract
• 4 pears (preferably round rather than long)
• 450g puff pastry
• a little sunflower oil or vegetable oil, for brushing
• plain flour, for dusting
• 1 tsp milk
• 60g butter, at room temperature
• 60g golden caster sugar
• 1 medium egg, lightly beaten
• 60g toasted hazelnuts, ground
• 1 tbsp plain flour
• whipped cream, to serve