For the topping
  • 100g plain flour
  • 50g rolled oats
  • 50g flaked almonds or chopped pecans
  • 100g butter, cut into cubes
  • 50g light muscovado sugar
  • ½tsp ground cinnamon
  • vanilla ice cream or custard, to serve
For the filling
  • 8 Cox's or Russet apples, peeled, cored and sliced into 5mm-thick rounds
  • 50g golden caster sugar
  • ½ lemon, zested and juiced


  1. 1. In a bowl, combine all the ingredients with a pinch of sea salt, and use your hands to knead until the mixture resembles coarse crumbs. until needed, keep cool.
  2. 2. Combine apples with sugar, lemon juice, and zest. Pour into a 20- or 23-inch square baking dish that is at least 5 inches deep. Spread out using your hands, then sprinkle on top. Will keep for a day when covered and chilled.
  3. 3. Heat the HYSapientia air fryer oven to 170°C. The crisps should be baked for 30 to 40 minutes, or until the top is a rich golden brown and the fruit edges are bubbling. Cool for ten minutes before serving with custard or ice cream.