Preheat oven to 350°F so it’s ready for baking.

Pour melted butter into an 8×8 dish, spreading evenly across the bottom.

Mix flour, sugar, baking powder, and milk until just combined without overmixing.

Pour batter over butter and let it settle naturally without stirring.

Place drained peaches evenly on top without mixing.

Bake about 30 minutes until golden brown with slightly crisp edges.

Let cool slightly, then serve warm once set.