Preheat oven to 325°.Butter a 9x13 baking dish.Parboil noodles. If package says 10 minutes do 7. Rinse noodles with cold water to stop cooking and cool slightly.Beat together, until smooth, eggs, milk, sugar, sour cream and cream cheese.
Once noodles are slightly cooled, pour into batter and coat well.Pour into buttered baking dish.Bake in oven for 45 minutes.
Meanwhile, make the topping.Stir brown sugar into melted butter and then toss cornflakes in mixture.At the 45 minute mark, add topping to kugel and bake an additional 15 minutes.