Easy Peach Cobbler

1 stick of margarine
1 cup flour
1 cup sugar
1 cup milk
1 can peaches (large)

Melt margarine in pyrex casserole dish or pan.
Add flour, sugar, and milk to the melted margarine, mix well.
Pour peaches over mixture.
Bake at 400 for 25-30 minutes.
Sprinkle top with butter and sugar. Return to oven and brown top.