Cut half of the apple into cubes and the other half into slices; break the walnuts into pieces.
Whisk the egg with brown sugar, then add the Greek yogurt and seed oil.
Combine the flour, baking powder, salt, and cinnamon; fold in the cubed apples and chopped walnuts.
Pour the batter into a 16 cm mold; decorate with apple slices and a few walnut halves.
Cook in the air fryer at 160°C for 28-30 minutes. Check the doneness with a toothpick and let cool before removing from the mold.
Air fryer
16 cm mold
Mixing bowl
Whisk or mixer
Store at room temperature for 1-2 days in an airtight container
Italy, Toscana
