1. Preheat oven to 375 degrees. Put the unbaked pie crust on a cookie sheet.
2. In a bowl, combine the sugar, flour, milk (set aside 2 Tablespoons for use in Glaze), egg and vanilla.
3. Stir in the sweet potatoes. Pour into the pie shell.
4. For the Glaze, combine the sugar, flour, butter and 2 Tablespoons milk. Drizzle over the sweet potato mixture, but don’t overdue it! If desired, garnish with the pecan halves.
5. Bake for 1 hour or until crust is golden brown and a knife inserted near the center comes out clean.
6. Tip: Sometimes I do not even use the Glaze; especially if I use the left-overs from the Sweet Potato Wedges. It can get a little too sweet!