Preheat oven to 350.

Boil 4 sweet potatoes. Beat together with -

3/4 cup white sugar
2 eggs
1/2 cup butter @ room temperature
1 tsp vanilla
1/2 cup milk.

Beat together well and pour into a buttered casserole.

Make topping:

1 cup brown sugar
1/3 cup flour
1/4 cup cold butter
1 cup chopped pecans

Mix together till crumbly - sprinkle on top of casserole.

Bake for 45 minutes - enjoy!!

Note: this is not a traditional souffle
This is also an excellent make ahead dish - i usually prepare it the night before Thanksgiving, cover and bake the next day