Preheat the oven to 350°F (175°C). In a baking dish, spread the sliced peaches evenly.

In a mixing bowl, combine the self-rising flour, sugar, and milk. Mix until smooth.

Pour the melted butter into the baking dish over the peaches, then pour the batter over the butter. Do not stir.

Bake in the preheated oven for 30-35 minutes or until the topping is golden brown.

Let cool slightly before serving.