1 1/2 cups sugar
2 teaspoons all-purpose flour
1 (5 ounce) can evaporated milk
1 egg, lightly beaten
1 teaspoon vanilla extract
2 cups mashed cooked sweet potatoes
1 (9 inch) unbaked pastry shell
GLAZE:
1/2 cup sugar
2 1/4 teaspoons all-purpose flour
2 tablespoons butter or margarine, melted
2 tablespoons evaporated milk
1/4 cup pecan halves