Pat's Sweet Potato Casserole

3 C cooked mashed sweet potatoes

1 C sugar

1/2 C butter or margarine

2 eggs beaten

1 t vanilla

1/3 C milk

Topping:

1 C brown sugar

1/2 C flour

1/3 C butter

1 C chopped pecans

Combine first 6 ingredients in large bowl. Mix with electric mixer until well blended. Pour into baking dish. Mix topping until mixture resembles coarse crumbs. Sprinkle over top. Bake 25 min. at 350 degrees.