Preheat oven to 350 degrees then grease the cookie sheets. Beat eggs and mix sugar in a large bowl until thick and pale. Add the butter, orange zest and vanilla and whisk them well. Combine the sifted flour and baking soda and stir into the mixture. Then sprinkle on nuts and mix them until dough is already sticky. Next, divide the dough. Place the half on the cookie sheet. Smooth it into a flat loaf (4-inch wide and 10-inch long). Do the same with the remaining dough. For 20 minutes, bake it until firm. Then let it cool for 3 to 4 minutes. On a cutting board, slice the loaves diagonally into 1/2-inch slice. Bake the cookies back into the oven until it is already brown and toasty. Let the cookies cool on a rack. Preserve it using an airtight jar and it will last up to one month. Italian Biscotti is a
great afternoon snack.
