Sweet Potato Casserole

This recipe originally from Sue Hodson.

3 C mashed sweet potato

1 C sugar

1/2 C butter

2 eggs

1 tsp. vanilla

1/3 C milk

Topping:

1/2 C brown sugar

1/4 . butter

1/2 C chopped walnuts (optional)

mix first 6 ingredients, place in greased casserole dish.  In separate bowl, cut butter into flour and sugar until pea-sized.  Add nuts, sprinkle on potatoes.  Bake @ 350 for 25 minutes.