Add the chopped apple, berries, vanilla, sugar and cinnamon to a bowl. Microwave for around 2 minutes until the fruit is soft, stirring halfway through.
In another bowl, mix the oats, protein powder, ground almonds and butter with a pinch of salt if you like. Use your fingertips to work the butter through until crumbly.
Sprinkle the crumble over the fruit and air fry at 180°C for 6–8 minutes until golden. Alternatively, microwave for around 40 seconds until the topping firms up.
Top with the Greek yoghurt or Skyr and enjoy!
