2 cups cooked, mashed sweet potatoes
1 cup white sugar
1/2 cup melted butter
1/3 cup milk
2 eggs, beaten
1 teaspoon vanilla extract
1/4 teaspoon ground cinnamon
1/4 teaspoon ground nutmeg
1/2 cup brown sugar
1/4 cup all purpose flour
2 1/2 tablespoons butter at room temperature
1/2 cup chopped pecans