Preheat oven to 350°F and butter an 8-inch square baking dish.
In a large bowl, mix together the peaches, granulated sugar, cornstarch, cinnamon, nutmeg, ginger, and salt. Pour into the prepared baking dish.
In a medium bowl, cut the butter into the flour, brown sugar, baking powder, baking soda, and vanilla extract until crumbly. Stir in the buttermilk until just combined. Spoon the topping over the peaches.
Bake for 45 minutes, or until the topping is golden brown and the peaches are bubbling. Allow to cool for 10 minutes before serving.
Interesting Facts
Cobbler is believed to have originated in Britain in the early 1800s.
Cobbler is traditionally served with a scoop of vanilla ice cream.
California is the top peach producing state in the US, with over 8 million tons of peaches harvested each year.