Preheat the oven to 180ºC
Add all the ingredients, except one diced apple, into a high-speed blender in the order listed above, and blend till smooth (you can keep it chunky if you like)
Spoon the batter into a square baking pan (I use parchment paper in a 22x22cm silicone baking tray)
Sprinkle the left over apple pieces over the batter and press down gently with the back of a spoon so the apple gets into the batter
You can sprinkle some more of the 3 spices used over the top of the batter if you want
Put it in the oven for 20 minutes (or a bit more, if you want to brown the apple)
Take the tray out after that and cut into bars
Try to wait for it to cool a bit before you bite into them…but good luck trying to do that! I serve mine in a bowl with a few tablespoons of almond milk…I used to use a dollop of cream as well.