Classic apple and rhubarb crumble - Starts at 60

Ingredients

• 5 (750g) granny smith apples, peeled, cored, chopped
• 1/3 cup caster sugar
• 1/2 teaspoon ground cinnamon
• 1 teaspoon finely grated lemon rind
• 6 rhubarb stems, trimmed, cut into 3cm pieces
• 2 teaspoons plain flour
• 1 cup rolled oats
• 1/2 cup plain flour, extra
• 1/2 cup firmly packed brown sugar
• 80g butter, chilled, chopped
• 1/4 cup flaked almonds
• Icing sugar, to serve