Preparation Steps

• Preheat your oven to 375°F (190°C).
• Place the sweet potato chunks in a large pot, cover with water, and bring to a boil. Cook for 15-20 minutes, or until fork-tender.
  2.5 pounds sweet potatoes
• Drain the sweet potatoes well and return them to the pot. Mash them until smooth.
• Stir in the melted butter, milk, granulated sugar, salt, cinnamon, and nutmeg until well combined.
  2.5 pounds sweet potatoes
• Pour the sweet potato mixture into a greased 8x8 inch baking dish.
• In a separate bowl, combine the flour, brown sugar, and chopped pecans for the streusel topping.
  2.5 pounds sweet potatoes
• Cut in the cold butter with your fingers or a pastry blender until the mixture resembles coarse crumbs.
  2.5 pounds sweet potatoes
• Sprinkle the streusel topping evenly over the sweet potato mixture.
• Bake for 25-30 minutes, or until the topping is golden brown and the casserole is bubbly.
• Let stand for 10 minutes before serving.