Stewed apples with walnut crumble topping

Crumble

• 50 g walnuts, plus extra for topping
• 100 g plain flour
• 100 g butter, chilled and cut into cubes
• 50 g Rapadura sugar

Stewed apple

• 2 apples, core removed and cut into quarters
• 20 g butter
• ½ tsp ground cinnamon
• flaked coconut (optional)