Preheat the oven to 350°F (175°C).

Grease a 9x13 inch baking dish with butter or cooking spray.

Open the canned peaches and drain them, reserving some juice if desired.

In a mixing bowl, combine the drained peaches with half of the sugar.

In another bowl, whisk together the flour, remaining sugar, baking powder, and salt.

Add the milk, melted butter, and vanilla extract to the dry ingredients and stir until just combined.

Pour the batter into the prepared baking dish and evenly distribute the peach mixture on top.

Bake for about 30 minutes or until the top is golden and a toothpick inserted in the center comes out clean.

Let the cobbler cool slightly before serving.