Apple and blackberry crumble - Starts at 60

Ingredients

• 2 medium apples, peeled, cored and sliced
• 1 cup blackberries, fresh (frozen is fine, just partially thaw first)
• 2 tablespoons white sugar
• 1 teaspoon cornstarch
• ⅓ cup plain flour
• 1 teaspoon cinnamon powder
• ¼ teaspoon nutmeg powder
• ½ cup rolled oats
• 4 tablespoons unsalted butter, melted
• 3-4 tablespoons brown sugar
• ⅓ cup chopped pecans
• ¼ cup dried cranberries
• Zest of 1 small lemon