1. Preheat oven to 375 degrees. Butter and flour two 8 1/2-by-4
1/2-inch (6-cup) loaf pans (see note, below); set aside. In a large
bowl, whisk together flour, baking powder, ginger, and salt. In a
medium bowl, whisk together sugars, pumpkin, melted butter, and eggs;
add flour mixture, and stir until just combined.
2. Divide batter between prepared pans. Bake until a toothpick
inserted in center of loaves comes out clean, about 50 minutes. Let
cool 10 minutes; invert pans and transfer loaves to a wire rack to cool
completely. Glaze, if desired.
3. For the sugar glaze: In a small bowl,
mix 1 1/2 cups confectioners' sugar with 2 to 3 tablespoons water until
mixture is smooth but thick. Place waxed paper under rack for a quick
cleanup. For easy pouring, transfer glaze to a liquid-measuring cup,
and drizzle over loaves. Let dry 15 minutes before serving. Makes
enough for 2 loaves.