Peel (optional) and chop the apple in blender.
Blend it with the egg, nut butter, cinnamon and cacao powder until smooth.
Pour the mixture into a small lined baking mold.
Bake in the oven or air fryer for the indicated time (Oven + 25-30 min at 350°F/180°C, Air fryer + 15-20 min at 340°F/ 170°C).
Let cool slightly before removing from the mold and enjoy.
