Sweet Potato Cassorole

3 cups hot, mashed, sweet pototoes
1/3 cup milk
1 cup sugar
2 eggs
1 T vanilla

Mix together in a 8x8 pan. Sprinkle with topping and bake. 350º for 25 minutes

Topping:
1 cup brown sugar
1/2 cup plain flour
1/3 cup butter ( not melted)
1 cup chopped nuts