Line a baking sheet with parchment paper and preheat the oven to 350F.
In a large bowl, whisk together the dry ingredients (except the chopped walnuts)
In a smaller bowl, whisk together the wet ingredients.
Stir the wet ingredients into the dry ingredients to form a dough.
Fold the walnuts into the dough.
Turn the dough out on the parchment-lined baking sheet and shape it into a flat-ish loaf.
Score the top of the loaf where it will be cut (about 16 pieces).
Bake the loaf for 25 – 30 minutes or until lightly brown. Remove the baking sheet from the oven and turn the oven down to 250F.
Remove the slices from the baking sheet and enjoy!
Cool the loaf for around 10 minutes and then cut the loaf into slices on the score lines that you previously made. Place the slices around the baking sheet and cool for another 20 minutes.
Bake the slices for another 30 minutes, then turn off the oven and leave the slices in the oven until it is cool.
Notes
The biscotti can be kept on the counter for up to one week or frozen for up to 3 months.