Step 3
In a bowl, cream butter and sugar. Add eggs; mix well. Add milk, two cups mashed sweet potatoes, vanilla, cinnamon, nutmeg, and salt; mix well. Pour into the pie shell. Bake at 425℉ for 15 minutes. Reduce heat to 350°; bake until set or a knife inserted in the center comes out clean, about 35-40 minutes longer. Cool. Store in refrigerator.