In another mixing bowl, whisk together the 1 cup flour, 1 tablespoon Sugar, Salt, and Baking Powder in a bowl.
1 Cup Flour, 1 tablespoon Sugar, ½ teaspoon Salt, ½ tablespoon Baking Powder
Then cut 3 tablespoon of Butter into very small pieces and cut it into the dry mixture with a pastry blender or two knives.
3 tablespoon Firm Butter
Pour the Milk over the mixture and gently stir until combined and dough-like.
½ Cup Milk
Spoon the dough mixture into about 6 evenly spaced mounds on top of the peaches in the cast iron skillet.
Carefully flatten the dough around the fruit to make a "cobbled" pattern of dough and fruit.
Do NOT completely cover the top of the peaches, you want about ⅓ of the peaches showing through. The dough will continue to spread as it cooks.
Evenly sprinkle the top of the cobbler with another 2 tablespoon of sugar.
2 tablespoon Sugar