Italian Chocolate Walnut Biscotti

Whisk together flour, cocoa, baking soda and salt in large bowl; set aside.

Beat together butter and sugar gradually with electric mixer until light and fluffy, about 2 minutes.

Add eggs and beat until well blended. Add flour mixture to form a stiff dough. Stir in walnuts and chocolate chips.

Grease and flour a large baking sheet.

With floured hands, form dough into two flattened logs, about 12-inches long and 2-inches wide. Place logs on baking sheet. Sprinkle each with powdered sugar.

Bake in 350°F (175°C) oven for 35 minutes or until tops are slightly firm to touch. Cool biscotti on sheets for 5 minutes.

Carefully transfer biscotti with wide spatula to wooded cutting board. With a very sharp serrated knife or an electric knife, slice biscotti diagonally into 3/4 inch wide slices.

Place biscotti, cut sides down, on baking sheet and return to oven and bake until crisp, about 10 minutes. Cool on wire rack.