Preheat the oven to 375 degrees F (190 degrees C).
Spread the sliced peaches evenly into a 9x13 inch baking dish.
In a mixing bowl, combine the flour, sugar, baking powder, and salt.
Add the milk, melted butter, and vanilla extract to the dry ingredients. Stir until well combined.
Fold in the white chocolate chips.
Drop spoonfuls of the batter over the peaches in the baking dish.
Bake in the preheated oven for 35-40 minutes, or until the top is golden brown and the peaches are bubbly.
Serve warm with a scoop of vanilla ice cream, if desired.