Preheat the oven to 350 degrees.Beat the sugar and the butter for a few minutes until light and fluffy. Add eggs one at a time mixing well between each addition and scraping the bowl as you go. Add vanilla extract and mix for a few seconds before adding half the flour mixture. Mix for ten seconds then add the yogurt and mix that in. Add the rest of the flour and mix only to combine.Peal and core the apples then cut into quarters. Slice each quarter of the apple very thinly and then add to the batter, mix and pour into a well greased springform pan.Bake 60-65 minutes or until an inserted toothpick comes out clean or with just a few crumbs on. Let cool in the pan for 10 minutes before transferring onto a cooling rack. Sprinkle with mixed sugar and cinnamon. Serve at room temperature.
Keyword apple cake, apple spice cake, fall cake, spice cake