Preheat your oven to 350°F (175°C) and grease a 9-inch round cake pan with butter. Line the bottom with parchment paper.

Peel, core, and thinly slice your apples, and set them aside in a bowl.

In a large mixing bowl, whisk together the flour, baking powder, baking soda, salt, cinnamon, and cardamom.

In another bowl, combine the melted butter, sugar, eggs, vanilla extract, and yogurt, whisking until smooth.

Pour the wet mixture into the dry ingredients and stir gently until just combined.

Spread half of the batter in the prepared pan, then layer half of the sliced apples on top.

Pour the remaining batter over the apples, then arrange the leftover apple slices on top.

In a small bowl, combine sugar and cinnamon and sprinkle over the apples.

Bake for 40–45 minutes, until golden brown and a toothpick comes out clean.

Let the cake cool in the pan for 10–15 minutes before transferring to a wire rack or serving plate.