Using a 22cm round spring form cake tin (base measurement), lay a large piece of baking paper onto base before clipping on the sides so that the paper extends beyond the base of the tin (this will help you lift the cake off the base and onto a cake rack to cool)
Then line the sides of the tin with paper
Preheat oven to 170 degrees fan forced
Place apples into a large bowl (large enough to fit cake mix in later) and stir through the cinnamon until all the apple is coated … put aside
Place eggs, sugar, milk, oil, vanilla, and zest into TM bowl and mix 6 seconds / speed 6
Add flour and baking powder and mix 6 seconds / speed 6
Pour batter over apple pieces and mix through gently
Place batter into cake tin … it will be a lumpy with the apple pieces jutting out but all is good
Dot top with remaining apple slices, pressing them gently into the batter
Scatter top with extra sugar of choice
Bake for 60 minutes, turn cake tin around and bake for a further 10 minutes or until skewer comes out clean (testing every 5 minutes thereafter: it took 1 hour and 15 minutes in my oven)
Leave in tin for 15 minutes, unclip the sides of the tin, and lift the baking paper with the cake on it and transfer the cake to a cooling rack to cool completely before cutting
Dust with cinnamon sugar whilst still warm