1 tablespoon all-purpose flour $
1 (15-ounce) can pumpkin $
3/4 cup granulated sugar $
3/4 cup packed dark brown sugar
1/2 cup butter, softened $
4 large eggs $
1 teaspoon vanilla extract
3 cups all-purpose flour (about 13 1/2 ounces) $
1 1/2 teaspoons pumpkin pie spice $
1 teaspoon baking powder $
1/2 teaspoon baking soda
1/2 teaspoon salt $
3/4 cup fat-free buttermilk
Glaze:
1/3 cup fat-free buttermilk
1/4 cup granulated sugar $
2 tablespoons butter $
2 teaspoons cornstarch $
1/8 teaspoon baking soda