Prep the Slow Cooker: Melt the butter and pour it into the bottom of your slow cooker.
Make the Batter: In a mixing bowl, whisk together the flour, sugar, milk, baking powder, and salt until smooth.
Add Batter: Pour the batter evenly over the melted butter in your slow cooker.
Layer the Peaches: Spoon the peaches (along with their syrup) over the batter. Resist the urge to stir!
Cook: Set your slow cooker to high and cook for 1 1/2 to 2 hours, or until the cobbler topping is fully set and golden.
Serve: Dish up warm, gooey cobbler straight from the crockpot, and don’t forget to top it with a big scoop of vanilla ice cream.