Preparation Steps

• Preheat oven to 375°F (190°C).
• Boil the sweet potatoes until tender, about 15-20 minutes. Drain and mash them in a large bowl.
  2 pounds sweet potatoes
• Stir in the melted butter, milk, granulated sugar, salt, and vanilla extract until well combined.
  2 pounds sweet potatoes
• Pour the sweet potato mixture into a greased 8x8 inch baking dish.
• In a separate bowl, combine the flour, chopped pecans, and brown sugar for the topping. Cut in the cold butter until the mixture resembles coarse crumbs.
  2 pounds sweet potatoes
• Sprinkle the pecan streusel topping evenly over the sweet potato mixture.
• Bake for 25-30 minutes, or until the topping is golden brown and the casserole is heated through.
• Let stand for a few minutes before serving.