Mix 1 cup sugar with cinnamon & add to peaches. Set aside. Melt butter in bottom of a 2 qt. Casserole dish. Combine remaining 1/2 cup sugar, flour, salt, baking powder, & milk. Pour batter over melted butter. Do Not Stir. Add peaches. Do Not Stir. Bake at 350 for 1 hour. Very easy and very delicious!!