Preheat oven to 350°F.

Grease a 9 X 13 inch baking dish.

In a large bowl, mix potatoes and white sugar.

Stir in eggs.

Mix in vanilla, milk, and 1/2 cup melted butter.

Gradually stir in rum until well blended.

Transfer mixture into prepared baking dish.

In a medium bowl, mix brown sugar, pecans, flour, and 1/3 cup melted butter.

Sprinkle this mixture over the mashed sweet potato mixture.

Bake for 30 minutes.

Allow to sit at least 10 minutes before serving.

*The rum in this recipe can be adjusted according to taste. It also tastes good if you leave the rum out completely.*