Steam or Boil sweet potatoes in a little water on stove top for 10-15 minutes and cool and drain. Add remaining ingredient's down to the brown sugar. Mix well Pout into a buttered 9X9 Casserole. Bake in a 400 degree oven for 30 minutes.
Topping: combine brown sugar, nuts cornflakes and Melted butter. Combine and spread evenly over the sweet potatoes and return to oven for an additional 10 minutes. Cool slightly before serving.