3 pounds sweet potatoes
3/4 cup sugar
1/3 cup whole milk
1/4 cup (4 tablespoons) butter, melted
2 large eggs, lightly beaten
1 teaspoon pure vanilla extract
1/2 teaspoon ground cinnamon
1/2 teaspoon freshly ground nutmeg
1/2 cup packed brown sugar
3 tablespoons all-purpose flour
3 tablespoons butter, cut into pieces
1/2 cup chopped walnuts
The sweet potato casserole can be assembled the day before and kept in the refrigerator until ready to cook.