Add the sliced peaches, sugar and salt to a large microwaveable bowl. Mix and microwave for about 2 minutes until sugar is dissolved. Also can cook on stovetop in saucepan over medium heat for a few minutes as well. Set aside.
Melt butter and add to a 9x13 inch baking dish.
In a large bowl whisk together the flour, sugar, baking powder and salt. Stir in the milk, and stir until just combined. Pour cobbler batter over the melted butter and spread out.
Spoon the peaches and juice over the batter.
Sprinkle cinnamon over the top of the batter.
Bake 40-50 minutes. Serve warm, it's delicious!
Notes
To substitute fresh or frozen peaches, you can also use canned peaches, use a 2 - 29 oz cans (larger) or 3 15- oz (smaller) cans of peaches, undrained and omit the sugar and salt above in the peach layer ingredients.