Sweet Potato Casserole

Potato mixture:

3 cups cooked mashed sweet potatoes (or canned)

1 cup sugar

2 eggs, beaten

1 tsp. Vanilla

½ cup milk

1/2 cup butter or margarine

Topping mixture:

1 cup chopped pecans

1/3 cup Flour

1 cup brown sugar

1/3 cup butter or margarine

Combine sweet potatoes, granulated sugar, eggs, vanilla, milk and ½ cup butter or margarine.  Place in buttered casserole dish.  Combine brown sugar, flour, 1/3 cup margarine or butter and chopped pecans.  Crumble over the top of the potato mixture.  Bake at 350 degrees for 30 minutes.