1 ½ cup powdered sugar ¾ cup canned pumpkin ½ cup mascarpone cheese (half of an 8-ounce container) ½ cup ricotta cheese 1 teaspoon pumpkin pie spice ¼ cup dry-roasted pistachio nuts, chopped
White Chocolate Glaze
3 tablespoon whipping cream 4 ounce white chocolate (with cocoa butter), chopped