Melt margarine in 13 x 9-inch casserole dish in 325° F oven.
While the margarine is melting, mix sugar and flour in a mixing bowl until well blended.
Add in milk and continue to blend.
Add peaches to butter in dish. Stir. Pour cobbler over peaches. Do not stir. Bake until cobbler is golden brown, approximately 1 hour.Makes 4 Source: