Preheat your oven to 350 degrees F
Line a 9x5 loaf pan with parchment paper (I use a stoneware loaf pan)
In a large bowl, quickly whisk together the eggs, coconut milk, coconut oil, and vanilla. And then also quickly add in the oat flour, arrowroot flour, powdered sugar, cinnamon, baking powder, and salt.
Peel, core, and slice your apples REALLY THIN preferably with a mandoline. Add them into the bowl and mi to coat all in the batter. Transfer the apples only to the pan, gently flattening out. Pour on the remaining batter to the top of the loaf pan evenly.
Sprinkle the almonds over the top of the cake (if using)
Transfer to the oven and bake for 50-60 minutes. Or until the top is golden brown.
Allow to set in pan for at least 15 minutes before transferring to a wire rack to cool.