Preheat your oven to 375℉ (190℃).
In a medium-sized pan over medium heat, cook the drained peaches, ¼ cup reserved juice, granulated and brown sugar, spices, lemon juice, and cornstarch until the sugar dissolves. Stir occasionally until it thickens.
Then, remove it from the heat and add 1-2 tablespoons of butter. Set aside.
In a separate bowl, mix the flour, sugar, baking powder, and salt.
Stir in the buttermilk, vanilla, and butter into the dry ingredients until just combined.
Spoon the hot peaches and syrup into the baking dish. Scoop the batter evenly over the peaches. Do not stir.
Sprinkle optional brown sugar over the batter. Bake for 30-35 minutes or until the crust turns golden brown.
Allow the cobbler to cool slightly; it's best served warm.
