1Preheat oven to 350 degrees F (175 degrees C). Spray one 2 quart casserole dish with non-stick cooking spray.
2Combine the sweet potatoes, white sugar, 1/4 cup of the butter or margarine and the milk. Mix until well blended. Spoon sweet potato mixture into the prepare casserole dish.
3Bake at 350 degrees F (175 degrees C) for 15 minutes.
4Combine the crushed cornflakes, pecans, remaining 1/4 cup butter or margarine, and brown sugar to taste. Sprinkle over the top of the baked sweet potatoes and return to the oven and bake for another 15 minutes or until lightly browned.