Ingredient:

• 6 sweet potatoes
• 1 cup white sugar
• ½ cup milk
• ½ cup melted butter
• 1 teaspoon vanilla extract
• 2 large eggs, beaten
• ½ teaspoon salt
• 1 cup dark brown sugar
• ⅓ cup all-purpose flour
• ⅓ cup melted butter
• 1 cup chopped pecans