Preheat the oven to 180C and line a deep springform cake tin.
Peel and thinly slice the apples. Place them in a bowl with the lemon juice and a few tablespoons of water.
Add all of the cake ingredients (except the coconut sugar) into a mixer and blend until smooth. I warmed the marg slightly in the microwave so that it blended more smoothly.
Add just over half of your batter to the cake tin. Layer half of the apple slices over the batter.
Repeat by covering the apple slices with the rest of the batter, and top with the remaining apple.
Sprinkle the coconut sugar over the apples and bake in the oven for 70-80 mins, or until an inserted skewer comes out clean.
