Preheat the oven to 350 F. Grease a round 8 or 9-inch cake pan with oil/butter and pour over some brown sugar. Then, line the bottom with parchment paper and cover the pan with tin foil from the outside.
Whisk together the eggs, sugar, vanilla, and melted butter with a hand mixer until it is foamy and white. It takes 3-4 minutes.
Add flour, baking powder into the mixture and stir to combine.
Pour the milk into the mixture and add the chunks of peaches.
Pour the batter into the pan and bake it for 55 minutes.
If it's ready let the cake cool completely and refrigerate overnight before cutting.