yellow sugar (optional)
Preheat oven 375 degrees. Spray a baking sheet with nonstick spray. Combine the flour, cornmeal, baking powder and salt in a bowl. With an electric mixer on high speed, beat the granulated sugar, egg, water, oil, lemon zest and lemon extract until blended. On low speed, add the flour mixture, beating just until combined.
Place dough in 2 (12”) logs, 3” apart on the sheet. Bake until golden, 20 minutes. Cool the logs on the sheet for 10 minutes. Transfer to a cutting board. Cut each log crosswise into ½” slices. Arrange slices in a single layer on the sheet and bake until lightly browned, 15-18 minutes. Cool on a rack.
For the icing, whisk confectioners’ sugar and lemon juice until smooth. Drizzle on the biscotti; sprinkle at once with yellow sugar (if using). Let stand until icing hardens, about 2 hours.
