Gooseberry flapjack crumble - Good Food Middle East

Ingredients

• 5 eating apples
• zest 1 lemon, plus juice ½ lemon
• 100g golden caster sugar (use 1-2 tbsp less if using sweeter red gooseberries)
• 2 tsp cornflour
• 1kg gooseberries, topped and tailed
• cream, vanilla ice cream or custard, to serve
• 100g golden syrup
• 100g butter
• 100g demerara sugar
• 175g jumbo oats
• 175g plain flour
• 100g rolled oats
• 50g hazelnuts, finely chopped