This healthy invisible apple cake, also known as thousand layer apple cake is with 70% fruit and healthy wholesome ingredients, which makes it the healthiest cake you'd make. Tender apple layers with thin custard-like layers, topped with cinnamon oats crumble. Do try!
Add all ingredients into a bowl and mix well using a spoon. Set aside.
Add eggs and sugar into another bowl and whisk until pale for around 5 minutes, using a handheld whisk at max speed. Now add in the rest of the wet ingredients and mix well.
Finally add in dry ingredients and whisk everything until well combined. Set aside.
Prepping The Apples
Peel the apples. Take an apple and slice as close as you can to the core (avoiding it) on all 4 sides. Now slice each piece to 2 mm thin. Place into a large bowl. Continue with the rest of the apples.
Pour the batter into the bowl with apples. Gently fold everything well with a spatula. Make sure each apple slice is coated with the batter.
Now spoon the mixture bit by bit into a greased and lined 4.4x10 inch (11x25 cm) loaf pan, arranging the apple slices as you go. Make sure to also spoon in the batter in between and lightly press to accommodate everything. Set aside.
Cinnamon Oats Crumble
Add all ingredients into a bowl and mix well using a spoon. Sprinkle evenly on top of the apple mixture.
Bake in a preheated oven at 350ºF (175ºC) on lower ⅔ rack, upper and lower heat, conventional mode (no fan-assisted) for 70 minutes or until a skewer inserted in the center comes out clean.
Remove from the oven and leave for 10 minutes before removing the cake out of the pan. Cool completely before slicing.
For a beautiful clean slice, wait until the cake is totally cool or chill it in the fridge for 1-2 hours before slicing it using a sharp knife
Use spoon and level method when measuring (for cup measurement)
Use portable oven thermometer (like this one) for a more precise temperature reading (I use it too)
Refer to my post above for ingredients notes and tips