Preheat oven to 350 degrees.
Drain 1 can of peaches; reserve the syrup from the other.
Place the butter in a 9- by 9-inch ovenproof baking dish.
Heat the butter in the oven until it's melted.
In a medium bowl, mix the flour, sugar, baking powder, salt, and chai spice mix.
Mix in the milk and the reserved syrup. About a half cup of reserved syrup will do just fine.
Pour the mixture over the melted butter in the baking dish.
Arrange the peaches over the batter and butter.
Bake for 40 minutes.
The batter will rise around the peaches, and the cobbler is done when the batter becomes a thick and golden brown crust.
Serve warm with whipped cream.