Vanilla & Chocolate Biscotti

Directions

1. 1
   Heat oven to 350F.
2. 2
   Combine flour, walnuts, baking powder, baking soda and salt in bowl; set aside.
3. 3
   Combine sugar and butter in another bowl.
4. 4
   Beat at medium speed, scraping bowl often, until well mixed.
5. 5
   Add eggs and vanilla; continue beating until well mixed.
6. 6
   Add flour mixture; beat at low speed until well mixed.
7. 7
   Remove half of dough from bowl.
8. 8
   Add melted chocolate to remaining dough in bowl.
9. 9
   Beat at low speed until well mixed.
10. 10
    Divide chocolate dough and white dough each into two equal portions.
11. 11
    Roll each portion on lightly floured surface into 6-inch log.
12. 12
    Place 1 chocolate roll on top of 1 vanilla roll; shape into 10x1 1/2-inch log.
13. 13
    Repeat with remaining dough logs.
14. 14
    Place each log 3 inches apart onto ungreased cookie sheet.
15. 15
    Bake 23-28 minutes or until set and lightly browned.
16. 16
    Let cool on cookie sheet 15 minutes.
17. 17
    Reduce oven temperature to 300F.
18. 18
    Cut logs diagonally into 1/2-inch slices with sharp serrated knife.
19. 19
    Arrange slices on cookie sheet, cut-side down.
20. 20
    Bake 14-18 minutes, turning once, or until golden brown and crisp.
21. 21
    Place onto cooling rack.
22. 22
    Cool completely.
23. 23
    Melt chocolate chips and 1 teaspoon shortening in 1-quart saucepan over low heat, stirring occasionally, until smooth.
24. 24
    Repeat with white baking chips and remaining shortening.
25. 25
    Drizzle over biscotti.