The wonder of baking in the Instant Pot Duo Crisp!  The apple mixture is beautifully moist and dense, with a perfectly golden crispy crumble topping.  Serve this magical cake with vanilla ice cream or cream! 

• Prep time: 20 mins
• Cook time: 1 hour + air fry for 15-20 mins

Tools:

• Duo Crisp or Instant Pot plus Vortex air fryer
• Springform cake tin (18 – 20cm, depending on 6L / 8L size)
• Foil to cover

Serves 8

Ingredients:

Apple mix:

• 2 ½  cups / 3 medium apples, diced
• 1 tsp cinnamon
• 1 tsp mixed spice
• 2 Tbsp brown sugar
• 1 Tbsp lemon juice

For the batter:

• 125ml / 115g / ½ cup canola oil
• 150g / ¾  cup sugar
• 1 tsp vanilla extract
• 3 Tbsp / 45 ml milk
• 2 large eggs
• 225g / 1 ½  cups flour
• 1 ½  tsp baking powder
• 1 tsp salt
• For the topping:
• 45g flour
• 75g demerara sugar
• ½ tsp ground cinnamon
• 50g cold butter
• 2 Tbsp almond nibs (or nut of choice, roughly chopped)

Method:

For the apple mix:

• In a bowl, combine diced apples with spices, lemon juice and sugar.
• Mix and set aside.
• For the cake batter:
• In a mixing bowl, combine oil, sugar, vanilla, milk and eggs.
• Whisk until well mixed.
• In a separate bowl mix together flour, baking powder, and salt.
• Combine wet and dry ingredients and mix.
• Grease an 18cm springform cake tin.
• Spread half of the batter on to the bottom of the tin.
• Add half of the apple mixture evenly over the batter.
• Then add the rest of the batter and smooth with a spatula.
• Finish with the remaining half of the apple mix.
• Wrap the cake tin very well in tinfoil.
• Make a tinfoil sling to help lower the cake into the inner pot.
• Pour 1 cup of water in the bottom of the inner pot and insert the trivet.
• Lower the cake into the inner pot and secure the lid.
• Pressure Cook on High for 60 minutes and allow a full natural release.

For the crumble topping:

• Combine demerara sugar, flour, butter, cinnamon and almond nibs.
• Mix into a rough crumble.
• Remove the cooked cake, remove the foil, and dry the inner pot.
• Sprinkle the streusel topping all over the cake.
• Return the cake to the inner pot and switch to the Air Fryer lid.
• Air Fry for 15 – 20 minutes at 180˚C until deeply golden brown and crispy.
• Slice and serve warm with vanilla ice cream.