Preheat your oven to 355°F (not convection).

Grease your springform pan with butter or non-stick spray. Line the bottom with parchment paper and add a sprinkle of brown sugar for a delightful crust.

Peel and chop the peaches into chunks.

In a bowl, whisk together the all-purpose flour, baking powder, and a pinch of salt if using unsalted butter.

Whisk the granulated sugar, egg, and egg yolk together until light and fluffy, then mix in the vanilla, milk, and melted butter.

Fold the flour mixture into the wet ingredients, then gently fold in the chopped peaches.

Pour the batter into the prepared pan and position the peach chunks on top.

Sprinkle additional sugar on top if desired.

Bake for 45-55 minutes until golden-brown and a toothpick comes out clean.

Cool the cake completely in the pan before refrigerating.

Release the cake from the pan and dust the top with icing sugar just before serving.